Упростить дробь… 1) х +1/х^2-5 х-6 2) х^2-6x+5/x^2-4x+3 3) x-2/x^2-5x+6 4) x+2/x^2-x-2 5) x^2+5x+4/x^2-2x-3

x+1/x^2-5x-6=x+1/ (x+1) (x-6)=1/x-6x^2-6x+5/x^2-4x+3=(x-1) (x-5) / (x-3) (x-1)=x-5/x-3x-2/x^2-5x+6=x-2/ (x-2) (x-3)=1/x-3x+2/x^2-x-2=x+2/ (x-1) (x+2)=1/x-1x^2+5x+4/x^2-2x-3=(x+1) (x+4) / (x+1) (x-3)=x+4/x-3