Question

хкв+6х+9/хкв-2х -15 =0

Answer 1

(x²+6x+9)/(x²-2x-15)=0

(x+3)(x+3)/((x-5)(x+3)=0  , x≠5,x≠-3

(x+3)/(x-5)=0

x+3=0, x=-3 net rešeniem

x∈∅