Question

(4/x-1) + (5)/[(x+1)(x-1)] **** Would i be able to cross out the (x-1) in the denomerator?******

Answer 1

no

Answer 2

(x+1)(x-1) equals x²-1
so you get
(4/x-1) + (5)/(x²-1)

Answer 3

that looks cleaner, but it is not simpler