1. 572. 54Maybe I'm but here goe.......
Solve this problem:
-5² + 4 x 2³ =
-6² + 2 x 3² =
My answers57 and 54
Sonova1st one = 7
2nd one = -18
-5² + 4 x 2³ = 25 + 32 = 57
-6² + 2 x 3² = 36 + 18 = 54
depends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
Too bad the teacher sees it bryhamms way1. 572. 54Maybe I'm but here goe.......
Solve this problem:
-5² + 4 x 2³ =
-6² + 2 x 3² =
My answers57 and 54
I agree, but it's written exactly how I typed it, no parenthesesdepends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
No, I think bryhamm's right. Unless it's specifically (-5)^2 then "-5^2" is -25, not 25. I think the teacher is right.There was a thread about this before. I think Shick! cleared it all up.depends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
no parentesis??? could be 1. 232 or 57 I think 57.. I was always taught mult/div takes precedence over add/subMaybe I'm but here goe.......
Solve this problem:
-5² + 4 x 2³ =
-6² + 2 x 3² =
My answers57 and 54
1. 572. 54Maybe I'm but here goe.......
Solve this problem:
-5² + 4 x 2³ =
-6² + 2 x 3² =
My answers57 and 54
Order of operations. First resolve the exponents, then the multiplication, then the addition.
You do the exponentials first, and since there is not a parenthesis around the 5 in the first one or the 6 in the 2nd one, you end up with -25 and -36 respectively.Had they wanted 25 and 36, then it should have been written (-5)² and (-6)²-5² + 4 x 2³ = 25 + 32 = 57
-6² + 2 x 3² = 36 + 18 = 54
Exactly. I think we're wrong. I think -5^2 is -25 using modern standards. To get 25 would require writing (-5)^2.I agree, but it's written exactly how I typed it, no parenthesesdepends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
This is exactly how my daughter worked it. The teacher marked them both wrong.1) 57
2) 54
Parentheses
Exponents
Multiplication
Division
Addition
Subdtraction
you're done
It's a positive number being raised to a power, and then negated. The minus sign is the same as multiplying by -1, and thus isn't done until the multiplication step in the order of operations.#1 - 57
#2 - 54
A negative number raised to an even power makes a positive number. Raised to an odd power is a negative number.
What's the teacher saying?
-5² should = -25 right? It's a negative x negativeNo, I think bryhamm's right. Unless it's specifically (-5)^2 then "-5^2" is -25, not 25. I think the teacher is right.There was a thread about this before. I think Shick! cleared it all up.depends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
I agree. It is easier to understand if you write it as -1 X 5^2Exactly. I think we're wrong. I think -5^2 is -25 using modern standards. To get 25 would require writing (-5)^2.I agree, but it's written exactly how I typed it, no parenthesesdepends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
Teacher says 7 and -18#1 - 57
#2 - 54
A negative number raised to an even power makes a positive number. Raised to an odd power is a negative number.
What's the teacher saying?
The teacher is right.(-5)^2 != -5^2 because the latter is -(5^2). Order of operations.This is exactly how my daughter worked it. The teacher marked them both wrong.1) 57
2) 54
Parentheses
Exponents
Multiplication
Division
Addition
Subdtraction
you're done
No. New math says to think of "-5" as "5 x (-1)". So when you see "-5^2", you're actually seeing "-1 x 5^2".I know that's different from how we did it, but it seems to be the way it's being done these days.-5² should = -25 right? It's a negative x negativeNo, I think bryhamm's right. Unless it's specifically (-5)^2 then "-5^2" is -25, not 25. I think the teacher is right.There was a thread about this before. I think Shick! cleared it all up.depends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
WTF? I don't remember this rule...doesn't make sense. The "-" is not a stand-alone operator...it must be combined with the number to make any sense.You can't compute the number and leave the "-" out there by itself, then throw it back in later.1. 572. 54Maybe I'm but here goe.......
Solve this problem:
-5² + 4 x 2³ =
-6² + 2 x 3² =
My answers57 and 54
Order of operations. First resolve the exponents, then the multiplication, then the addition.You do the exponentials first, and since there is not a parenthesis around the 5 in the first one or the 6 in the 2nd one, you end up with -25 and -36 respectively.Had they wanted 25 and 36, then it should have been written (-5)² and (-6)²-5² + 4 x 2³ = 25 + 32 = 57
-6² + 2 x 3² = 36 + 18 = 54
Yes, but that can still be read two ways. Negative...5 squared or negative 5...squared.maybe it's just me, but I read that aloud as "negative 5 squared"...since when do negative numbers HAVE to be surrounded by parentheses?
negative * negative = positivenegative * negative * negative = negative-5² should = -25 right? It's a negative x negativeNo, I think bryhamm's right. Unless it's specifically (-5)^2 then "-5^2" is -25, not 25. I think the teacher is right.There was a thread about this before. I think Shick! cleared it all up.depends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
negative 5, squaredYes, but that can still be read two ways. Negative...5 squared or negative 5...squared.maybe it's just me, but I read that aloud as "negative 5 squared"...since when do negative numbers HAVE to be surrounded by parentheses?
No, it's new. They do it differently now. Shick! can explain it.WTF? I don't remember this rule.
Right, but it's now being done such that the way it is written is to be read as negative, 5 squared.negative 5, squaredYes, but that can still be read two ways. Negative...5 squared or negative 5...squared.maybe it's just me, but I read that aloud as "negative 5 squared"...since when do negative numbers HAVE to be surrounded by parentheses?
Wow, I'll say it's different. And I used to be good in math. I will have to explain to her the bolded part. It certainly makes it a bit easier to understand.No. New math says to think of "-5" as "5 x (-1)". So when you see "-5^2", you're actually seeing "-1 x 5^2".I know that's different from how we did it, but it seems to be the way it's being done these days.-5² should = -25 right? It's a negative x negativeNo, I think bryhamm's right. Unless it's specifically (-5)^2 then "-5^2" is -25, not 25. I think the teacher is right.There was a thread about this before. I think Shick! cleared it all up.depends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
Who the hell wrote this thesis to get this approved?The result the teacher is looking for used to be: -(5^2) + x - y....No, it's new. They do it differently now. Shick! can explain it.WTF? I don't remember this rule.
-5² + 4 x 2³ =1st one = 7
2nd one = -18
All this negativity is making me depressed... I'm outnegative * negative = positivenegative * negative * negative = negative-5² should = -25 right? It's a negative x negativeNo, I think bryhamm's right. Unless it's specifically (-5)^2 then "-5^2" is -25, not 25. I think the teacher is right.There was a thread about this before. I think Shick! cleared it all up.depends if you look at as -(5^2) or (-5)^2. I assume the latter, but could be wrong.1st one = 7
2nd one = -18
Yes. We've established that that's the right answer today. Do you remember, though, that that was not taught that way back when we were in school?It's an order of operations thing.
(-5)^2 is said as "Negative five squared"
-5^2 is said as "The negative of five squared" and as such, you square it first and then negate.
It was most definitely not that way when I went to school. How old are you?It's basically done out of necessity.
You can write something 3 ways:
-5^2
(-5)^2
-(5)^2
For clarities sake, -5^2 is defined as -(5)^2, it's just a rule and it's been that way since I was little.
It's been like that as far back as I can remember. Course, I was taught this stuff in the 80's...dunno how far back y'all go. It's just one of those cooky definitions you have to have drilled in your head, that makes little logical sense but is necessary later on in math, like the order of operations.Yes. We've established that that's the right answer today. Do you remember, though, that that was not taught that way back when we were in school?It's an order of operations thing.
(-5)^2 is said as "Negative five squared"
-5^2 is said as "The negative of five squared" and as such, you square it first and then negate.
I was taught like this:It was most definitely not that way when I went to school. How old are you?It's basically done out of necessity.
You can write something 3 ways:
-5^2
(-5)^2
-(5)^2
For clarities sake, -5^2 is defined as -(5)^2, it's just a rule and it's been that way since I was little.
Brewdude Posted Today, 05:45 PM
To get 7 & 18 as answers, the equations should have been written:
-(5^2) + 4 X 2^3
and
-(6^2) + 2 X 3^2
At least this is what I recall from my math classes. Why change something like this for "new" math?
I was taught to do -5^2 as 25 because of no parethesis. If parenthesis then it would be negative because the negative is outside the rules of doing exponents first. I was taught in the mid 90's though. Dont know if I am in your group or rolyaTy's.Yeah, as someone said earlier I think they take the negative sign as a multiplicaiton of (-1) times a number. So:
-5^2 really is (-1)x(5)^2 whereas (-5)^2 is (-1x5)^2
\/\/o\/\/Math in the sixties must have been psychadelic with all those double equals signs.IIRC, I was taught this stuff in the early to mid 60s. The way I was taught was that -5^2 == -25
1st one = 7
2nd one = -18
This is weird. Is this old math then?I would have learned this in the early '80s (what grade do they do this in? 5? 6?) and I was taught that -5^2 == +25.IIRC, I was taught this stuff in the early to mid 60s. The way I was taught was that -5^2 == -25
The teacher is wrong.Too bad the teacher sees it bryhamms way1. 572. 54Maybe I'm but here goe.......
Solve this problem:
-5² + 4 x 2³ =
-6² + 2 x 3² =
My answers57 and 54