PLEASE HELP. ITS TIMED. Which pair shows equivalent expressions? 2x+10=-2(x-5)
0 -2(x+5) = 2x-10
-2x-10=-2k+5)
0 -2(x-5)=-2x-10

Let x have probability generating function gx (s) and let un generating function u(s) of the sequence uo, u1, satisfies p(x > n). show that the (1- s)u(s) = 1 - gx(s), whenever the series defining these generating functions converge.