x⁴-2x²y-3y²+8y-4

来源：学生作业帮助网编辑：六六作业网时间：2024/05/22 17:38:48

x⁴-2x²y-3y²+8y-4x⁴-2x²y-3y²+8y-4x⁴-2x²y-3y²+8y-4原式=x

x⁴-2x²y-3y²+8y-4
x⁴-2x²y-3y²+8y-4

x⁴-2x²y-3y²+8y-4
原式=x⁴-2x²y+y²-4y²+8y-4
=(x²-y)²-(2y-2)²
=（x²-y-2y+2）(x²-y+2y-2)
=(x²-y+2)（x²+y-2）