упростить дробь... 1) х+1/х^2-5х-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-6 x^2-6x+5/x^2-4x+3=(x-1)(x-5)/(x-3)(x-1)=x-5/x-3 x-2/x^2-5x+6=x-2/(x-2)(x-3)=1/x-3 x+2/x^2-x-2=x+2/(x-1)(x+2)=1/x-1 x^2+5x+4/x^2-2x-3=(x+1)(x+4)/(x+1)(x-3)=x+4/x-3