1
(x+8)/(x-10)=(x-2)/(x+4)
(x-10)(x+4)≠0⇒x≠10,x≠-4
(x+8)(x+4)=(x-2)(x-10)
x²+4x+8x+32=x²-10x-2x+20
x²+12x-x²+12x=20-32
24x=-12
x=-12:24
x=-0,5
2
150/x=25-x
x≠0
150=25x-x²
x²+25x+150=0
x1+x2=-25 U x1*x2=150
x1=-15 U x2=-10
3
(x²-10)/(x-2)=3x/(2-x)
x≠2
x²-10=-3x
x²+3x-10=0
x1*x2=-3 U x1*x2=-10
x1=-5 U x2=2 не удов усл