Math, asked by naikpuja1018, 6 months ago

Evaluate using suitable identities:
(3b-1)(3b+1)

Answers

Answered by thakuritej77

4

= (3b-1)(3b+1)

by using identity (a+b)(a-b) = a²-b²

= (3b)²-(1)²

= 9b²-1

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