-x^2+x+2/x^2+x-6
x^2–x–2=(x+1)(x–2) x^2 +x–6=(x–2)(x+3) (–x^2 +x+2)/(x^2+x–6)=–(( x+1)·(x–2))/((x–2)(x+3)) = – (x+1)/(x+3) при х ≠ 2