作业帮(x-1)(x²+2x-3)=
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/17 01:08:20
x)Ө5ԨPS6465ִI*._`gGϋqV
bU0JBiMm
]
]
MmcT0@<;Sm {
Y hiTA U/
(x-1)(x²+2x-3)=
(x-1)(x²+2x-3)=
(x-1)(x²+2x-3)=
解
(x-1)(x²+2x-3)
=x(x²+2x-3)-(x²+2x-3)
=x³+(2x²-x²)+(-3x-2x)+3
=x³+x²-5x+3
=x(x²+2x-3)-1(x²+2x-3)
=x³+2x²-3x-x²-2x+3
=x³+x²-5x+3