Question

Factorize [a²+1]b²-b⁴-a2​

Answer 1

Answer:

(a^2+1)b^2-b^4-a^2

=a^2b^2+b^2-b^4-a^2

=a^2b^2-a^2-b^4+b^2

=a^2(b^2-1)-b^2(b^2-1)

=(b^2-1)(a^2-b^2)

=(b+1)(b-1)(a+b)(a-b)