Question

初二数学 整式的整除与分解因式a^3(x-y)-3a^b(y-x)因式分解为 .

Answer 1

a^3(x-y)-3a^b(y-x)

=a^3(x-y)+3a^b(x-y)

=(x-y)(a^3+3a^b)

=(x-y)[a(a^2+3a^(b-1))]