Question

0.0625a^4－b^4 －1+s^4

Answer 1

0.0625a^4－b^4

=(0.25a)^4-b^4

=[(0.25a)^2+b^2][(0.25a)^2-b^2]

=[(0.25a)^2+b^2](0.25+b)(0.25-b)

-1+s^4

=s^4-1

=(s^2+1)(s^2-1)

=(s^2+1)(s+1)(s-1)