Răspuns:
Explicație pas cu pas:
1) (x²-x)/(x²-6x+5)=x(x-1)/(x-1)(x-5)=x/(x-5)
2)(x²-4)/(x²+x-6)=(x-2)(x+2)/(x+3)(x-2)=(x+2)/(x+3)
3)(-x²+9x-18)/(x²+6x-27)=-(x-6)(x-3)/(x-3)(x+9)=-(x-6)/(x-9)
4)4(x²+2x-3)/(x-1)(x-5)=4(x+1)(x-3)/(x-1)(x-5)
5)(6x²+7x-3)/(2x²-x-6)=(x+3/2)(x-1/3)/(x-2)(x+3/2)=(x-1/3)/(x-2)
6)3x(x+2)/(x+2)²=3x/(x+2)