Question

分解因式;(1) -4X^3+16X^2-26X (2)56X^3YZ+14X^2Y^2Z-21XY^2Z

Answer 1

2,56x^3yz+14x^2y^2z-21xy^3z =xyz(14x-7y)(4x+3y)

3,mn(m-n)-m(n-m) =m(m-n)(n+1)

4,4XY-(X^2-4Y^2) =(2y-x)^2

5,4m^2-9n^2 =(2m+3n)(2m-3n)

6,-2X^2n-4X^n =-2x^n(x^n+2)

7,9(m+n)^2-16(m-n)^2 =-7(m+n)^2