Question

158²-142² solve using identities





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Answer 1

here we use identify

(a+b)(a-b) = a²-b²

so,

a²-b²=(a+b)(a-b)

here a=158

and

b=142

so,

=(158+142)(158-142)

= 300 X 16

= 4800

so, your answer is 4800

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