Math, asked by kanakverma2373, 7 months ago

using identity, evaluate(91²)

Answers

Answered by dineshManideep

4

(91²)

(100-9)²

by using the ldentity (a-b)²= a²-2ab+b²

100²-2(100)(9)+9²

10000-1800+81

10081-1800

8281

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