what is (2a)^2-(-8a)^3-4a^2

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Guest Jan 8, 2015

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Best Answer

(2a)^2-(-8a)^3-4a^2

(2a)^2 = 4a^2 so the first and last terms "cancel" each other

And

-(-8a)^3 = - (-8)^3 * (a)^3 = - (-512)a^3 = 512a^3

CPhill Jan 8, 2015

CPhill · Answer 1 · 2015-01-08T12:22:33

(2a)^2-(-8a)^3-4a^2

(2a)^2 = 4a^2 so the first and last terms "cancel" each other

And

-(-8a)^3 = - (-8)^3 * (a)^3 = - (-512)a^3 = 512a^3