Question

решите уравнение 2/(x-3)=x+5/(x^2-9)

Answer 1

2/(x-3)=x+5/(x^2-9)

2х^2-18=х^2+5x-3x-15

2x^2-x^2+5x-3x-18+15=0

x^2+2x-3=0

D=4+12=16

x1=-2+4/2=1

x2=-2-4/2=-3