多项式x2-3x+2,x2-18x+32,x2+x-6的公因式是(  ) A.x-1 B.x-16 C.x+3 D.x-2

问题描述:

多项式x2-3x+2,x2-18x+32,x2+x-6的公因式是(  )
A. x-1
B. x-16
C. x+3
D. x-2

x2-3x+2=(x-1)(x-2),
x2-18x+32=(x-16)(x-2),
x2+x-6=(x+3)(x-2),
公因式为x-2.
故选:D.