Question

разложите на множители x^2(b-2)+y(2-b)
2m(a-3)-5c(3-a)
12m(m-n)-6n(n-m)

Answer 1

x²(b-2)+y(2-b)=x²(b-2)-y(b-2)=(b-2)(x²-y)

2m(a-3)-5c(3-a)=2m(a-3)+5c(a-3)=(a-3)(2m+5c)

12m(m-n)-6n(n-m)=12m(m-n)+6n(m-n)=(m-n)(12m+6n)