Question

Can someone check my answers on any of these problems?

Simplify the expression where possible.

(-5x^2)^3

I think that the answer is 75x^2

Simplify the expression where possible.

(3b^3)^4

I had 3b^12, but that was wrong.


Simplify the expression where possible.

(-4x^2)^2

I have -4x^4

Answer 1

oh, ok

Answer 2

Any advice for the others?

Answer 3

first one should be \(125x^6\)

Answer 4

\[(3b^3)^4=3^4x^{3\times 4} =81x^{12}\]

Answer 5

oops i meant \(81b^{12}\)

Answer 6

Okay,

Answer 7

\[(-4x^2)^2 =(-4)^2\times (x^2)^2=16x^4\]

Answer 8

Thanks so much!

Answer 9

yw

Answer 10

@satellite73 the first one was considered wrong... any other ideas?

Answer 11

yes, because \(-5)^2=-5\times -5\times -5=-125\)

Answer 12

try \(-125x^6\)

Answer 13

okay...

Answer 14

Awesome, it worked!