多项式x^2-3x+2,x-18x+32,x^2+x-6的公因式是()A.x-1B.x-16C.x+3D.x-2
问题描述:
多项式x^2-3x+2,x-18x+32,x^2+x-6的公因式是()
A.x-1
B.x-16
C.x+3
D.x-2
答
选D.
答
x^2-3x+2分解为 (x-2)(x-1)
x-18x+32 (x-2)(x-16)
x^2+x-6 (x-2)(x+3)
答
1:(x-2)(x-1)
2:(x-2)(x-16)
3:(x-2)(x+3)
故选D