Question

多项式m（n-2)-m^2(2-n) a(x-y)+2by-2bx 的因式分解

Answer 1

m（n-2)-m^2(2-n)

=m（n-2)+m^2(n-2)

=(n-2)(m+m^2)

=m(n-2)(1+m)

a(x-y)+2by-2bx

=ax-ay+2by-2bx

=(ax-2bx)-(ay-2by)

=x(a-2b)-y(a-2b)

=(a-2b)(x-y)