Question

Все примеры, задание во вложении!!! Заранее спасибо!!

Answer 1

91
а)=xy/(x-y)*(x²-y²)/x²y²=xy*(x-y)(x+y)/(x-y)*x²y²=(x+y)/xy
б)=mn²/(n²-m²)*(2m-2n)/mn=mn²*2(n-m)/(n-m)(n+m)*mn=2n/(n+m)
в)1)a- (6a-4)/(a+2)=(a²+2a-6a+4)/(a+2)=(a-2)²/(a+2)
2)(a-2)²/(a+2)*(a+2)/(a²-2a)=(a-2)²*(a+2)/(a+2)*a(a-2)=(a-2)/a
92
1)=(b²-aq)/ab :(a+b)=(b²-aq)/ab(a+b)
2)=(x²-y²:(y+x)/xy=(x-y)(x+y)*xy*xy/(y+x)=x²y-xy²