Question

Divide and simplify completely. Assume that no denominator equals zero.

d^2-1/d^2-d divided by d-1/d


A.d-1/1-d




B.1



C.d^2-1/d^2




D.d+1/d-1

Answer 1

@davidmack

Answer 2

(d^2-1)/(d^2-d)/(d-1)/d
=>(d^2-1)d/(d^2-d)(d-1)
=>(d^2-1)d/(d-1)d(d-1)
=>(d^2-1)/(d-1)(d-1)
=>(d-1)(d+1)/(d-1)(d-1)
=>(d+1)/(d-1)

Answer 3

thx you