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(4x-16)/(2-x)=x+1 /*(2-x)
(x+1)(2-x)=4x-16
2x-x²+2-x-4x+16=0
-x²-3x+18=0
Δ=9+4*18=81
x1=-1/2*(3+9)= -6, x2=-1/2*(3-9)=3
Odp. x∈{-6, 3}