Question

what is the formula of (4ab)

Answer 1

Here is your answer....
( 4ab) =( a+b )²- ( a-b )²

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Answer 2

Answer:

4ab = (a+b)²-(a-b)²

Explanation:

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We know the algebraic identities :

i ) (a+b)² = a²+2ab+b²

ii) (a-b)² = a²-2ab+b²

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Now,

(a+b)²-(a-b)²

= a²+2ab+b²-(a²-2ab+b²)

= a²+2ab+b²-a²+2ab-b²

= 4ab

Therefore,

4ab = (a+b)²-(a-b)²

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