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(5a^3b^4)^2=?
*I don't get this one...PLease Help!

(5a3b4)2=

(5)2*(a3)32*(b4)2=

25*a6b8

I hope this turns out right. With all of these exponents it is easy to forget to turn them off and or to put parentheses in the wrong place.

thanks once again...do you think you can help me with this one:
(-mn^8)^3
*Would this one be:-m^3n^24?

The middle step is not correct. Strike the 3 but leave everything else.

That is correct. Be sure and read my correction post for the first one.

(-2x^2y)^3*(5xy^3)^2
*I reallllllyyyyy need help with this one...

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  1. what is the difference between 2x cubed and (2x)cubed

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