Math, asked by sharmashashwat2008, 8 days ago

Show that (5x + 7y)² - (5x -7y)² = 140xy.​

Answers

Answered by Dan104Sa
1

Answer:

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Step-by-step explanation:

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Answered by XxDakshSaxena19708xX
3

Answer:

(5x+7y)^2 - (5x-7y)^2 = 140xy

Step-by-step explanation:

(5x+7y)(5x-7y) - (5x+7y)(5x-7y)

(5x+5x)(7y+7y)

(10x)(14y)=140xy

Hence,proved

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