Question

158²-142² solve using identities




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Answer 1

Answer:

we can rewrite 158²-142² as (158-142)²

(158-142)² = (a-b)²

= a²+b²-2ab (substitute the numbers)

=158²+142²-(2*158*142)

=45,128 - (44,872)

=45,128-44,872

=256 answer

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