Question

find the value of [513]² - [512]²

Answer 1

hey your ans is here


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given:-(513)2-(512)2


now this is forming an identity
a2-b2=(a+b)(a-b)
so

(513)2-(512)2=(513+512)(513-512)=1025

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Answer 2

(513)² - (512)²
= (513 + 512)(513 - 512)
= 1025 × 1 = 1025