Question

分解因式 4a的3次方*b(x-y)*4的a的平方*b(y-x)*ab(x-y)

Answer 1

4a^3b(x-y)+4a²b(y-x)+ab(x-y)

=4a^3b(x-y)-4a²b(x-y)+ab(x-y)

=ab(x-y)(4a²-4a+1)

=ab(x-y)(2a-1)²