Math, asked by ZEUS786, 7 months ago

By using identity a² – b² = (a+b)(a-b), factorise a⁴ – b⁴ + 2b² – 1.

Answers

Answered by Anonymous

3

a⁴-b⁴+2b²-1

= (a²)²-(b²)²+2b²-1

= (a²)²-(b²-1)²

= (a²+b²-1)(a²-b²+1)

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