Question

решите $frac{ x^{3}+2 x^{2} -3 x^{} }{ x^{2} +3 x^{} }$

Answer 1

x³+2x²-3x=x(x²+2x-3)=x(x+3)(x-1)
x²+2x-3=0
x1+x2=-2 U x1*x2=-3⇒x1=-3 U x2=1

(x³+2x²-3x)/(x²+3x)=x(x+3)(x-1)/[x(x+3)=x-1

Answer 2

а можно подробнее