Question

计算：(a/b+b/a+2)除以(b/a+a/b-2)

Answer 1

(a/b+b/a+2)除以(b/a+a/b-2)

=[(a^2+2ab+b^2)/ab]/[(a^2+b^2-2ab)/ab]

=(a+b)^2ab/[ab(a-b)^2]

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