将4\1x+x的3次方-x的3次方因式分解

问题描述:

将4\1x+x的3次方-x的3次方因式分解

原式=(2x3y-2x2y2+2x2y2-x3y)÷x2y
=x3y÷x2y
=x
=2008
原式=xy2+xy3-xy3+xy2+2x3-2xy2
=2x3
=2×(-8)
=-16

应该是x/4+x³-x²
=x(x²-x+1/4)
=x(x-1/2)²