Math, asked by sanjeevnagar2014sn, 1 year ago

(215)²-(205)² solve by using identity

Answers

Answered by vaibhav605632

0

Answer:

4200

Step-by-step explanation:

this eq. is in form of a2_b2

then we apply the formula (a+b)(a_b)=(215+205)(215-205)=420×10=4200

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