Math, asked by ravihusain123, 7 months ago

(5x +7 y)²- (5x- 7y)²

Answers

Answered by jattpb08

1

Answer:

25x²+70xy+49y²-(25x²+49y²-70xy)

+140xy

Answered by abhishekbansal3110

2

Answer:

(5x+7y)²-(5x-7y)²= a²-b²

{(5x+7y)+(5x-7y)} {(5x+7y)-(5x-7y)= (a+b)(a-b)

{5x+7y+5x-7y}{5x+7y-5x+7y}

{5x+5x}{7y+7y}

{10x}{14y}

140xy

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