Question

a-2b+﹙a+2b﹚分之4b²+﹙a²-4b²﹚分之4a²b等于多少

Answer 1

=((a-2b)*(a^2-4b^2)+4b^2*(a-2b)+4a^2b)/(a^2-4b^2)

=(a^3+2a^2b)/(a^2-4b^2)

=a^2/(a-2b)