作业帮x⁴-2x²y-3y²+8y-4
来源：学生作业帮助网 编辑：作业帮 时间：2024/10/06 15:48:09
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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）