Question

Срочно на уроке !!!!!!!

Answer 1

Ответ:

Объяснение:

3/(5x²y) -2/(3xy²)=(9y-10x)/(15x²y²)=(-10x+9y)/(15x²y²)

4/(y²-4) -1/(y-2)=4/((y-2)(y+2)) -1/(y-2)=(4-(y+2))/((y-2)(y+2))=(4-y-2)/((y-2)(y+2))=(2-y)/(-(2-y)(y+2))=-1/(y+2)

(3a+3b)/(a²+2ab+b²) -2/(a+b)=(3(a+b))/(a+b)² -2/(a+b)=(3-2)/(a+b)=1/(a+b)

6/(5a-10) -3/(3a-6)=6/(5(a-2)) -3/(3(a-2))=(18-15)/(15(a-2))=3/(15(a-2))=1/(5(a-2))

1/(x²-xy) -1/(xy-y²)=1/(x(x-y)) -1/(y(x-y))=(y-x)/(-xy(y-x))=-1/(xy)