(x²-x-2)/(2-x)
x²-x-2=0
D=1+4*2=9
x1=(1+3)/2=2
x2=(1-3)/2=-1
x²-x-2=(x-2)(x+1)=-(2-x)(x+1)
(-(2-x)(x+1))/(2-x)=-x-1
(x²-x-2)/(2-x)
x²-x-2=0
D=1+4*2=9
x1=(1+3)/2=2
x2=(1-3)/2=-1
x²-x-2=(x-2)(x+1)=-(2-x)(x+1)
(-(2-x)(x+1))/(2-x)=-x-1