Question

a^4-b^4+2b^2-1 Factorize this...​

Answer 1

Answer:

a4-b4+2b2-1

=a4-(b4-2b2+1)

=a4-(b4-b2-b2+1)

=a4-[b2(b2-1)-1(b2-1)]

=a4-(b2-1)(b2-1)

=(a2)2-(b2-1)2

=(a2+b2-1)(a2-b2+1)

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