How do you simplify #8a^2 (-2a)^3#?

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Answer 1 · 2016-04-06T02:48:52

#64a^5#

#color(blue)(8a^2(-2a)^3#

First simplify #(-2a)^3#

#rarr(-2a)^3=(-2a)(-2a)(-2a)#

#rarr=-8a^3#

So,

#rarr8a^2(-2a)^3=-8a^2(-8a^3)#

Simplify #-8a^2(-8a^3)#

#color(green)(rArr=64a^5#

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