Question

Помогите решить!разложить на множители:
1)аb+ac+am+yb+yc+ym
2)хy-x²y²+x³y³-a+axy-ax²y²

Answer 1

a(b+c+m)+y(b+c+m)=(a+y)(b+c+m)

хy-x²y²+x³y³-a+axy-ax²y²=xy(1-xy+x²y²)-a(1-xy+x²y²)=(1-xy+x²y²)(xy-a)