Question

(a-b) cube =?????????????

Answer 1

a cube -b cube -3ab(a-b)

Hope it hepls

Answer 2

Hey frnd!!

Ur answer

⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇⬇

(a−b)^3=a^3−3a^2b+3ab^2−b^3

You can verify this by the binomial expansion theorem or just expanding it:

(a−b)^3

=(a−b)(a−b)(a−b)

=(a^2−2ab+b^2)(a−b)

=a^2(a−b)−2ab(a−b)+b^2(a−b)

=a^3−a^2b−2a^2b+2ab^2+ab^2−b^3

=a^3−3a^2b+3ab^2−b^3

Hope i will help u..♥♥
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