9u^2over28v divided by 27u^2over 8v^2

Question

I also need to help with this problem

x^2-1over2x^2-x-1 divided by x^2-4over2x^2-3x-2

Answer 1

(9u^2) /28v)   /   (27u^2 /8v^2)

become (9u^2/28v) * (8v^2/27u^2)

=(9u^2*8v^2) / (28v*27u^2)

=(72/756)(u^2/u^2)*(v^2/v)

=(72/756)v

=0.095238095v