Question

The value of (a + b)2 – (a – b)2 isRequired to answer. Single choice.

(1 Point)

a) 4ab

(b) – 4ab

(c) 2a2 + 2b2

(d) 2a2 – 2b2

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Answer 1

(a+b)^2-(a-b)^2

a^2+b^2+2ab-(a^2+b^2-2ab)

a^2+b^2+2ab-a^2-b^2+2ab

= 4ab

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