Question

Rozwiąż równanie x/-3 = -5/x+2

Answer 1

X/-3=-5/(x+2)
3*5-x(x+2)=0
15-x²-2x=0
Δ=(-2)²-4*15*(-1)
Δ=4+60
Δ=64
√Δ=√64=8
x1=(2-8)/(2*(-1))
x1=-6/(-2)
x1=3
x2=(2+8)/(2*(-1))
x2=10/(-2)
x2=-5
x∈{-5,3}