Question

(a+b)square-(a-b)square
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Answer 1

Answer:

4ab

Step-by-step explanation:

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Answer 2

Answer:

4ab

Step-by-step explanation:

(a+b)² – (a-b)²

(a²+ b²+2ab) – (a²+b²-2ab)

a²+b²+2ab-a²-b²+2ab

4ab

(or)

(a+b)² - (a-b)²

[(a+b)+(a-b)]×[(a+b)-(a-b)]

(a+b+a-b)(a+b-a+b)

(2a)(2b)

4ab