分解因式 x^4-3x²y²+2y^4
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/20 14:35:34
分解因式x^4-3x²y²+2y^4分解因式x^4-3x²y²+2y^4分解因式x^4-3x²y²+2y^4x^4-3x²y
分解因式 x^4-3x²y²+2y^4
分解因式 x^4-3x²y²+2y^4
分解因式 x^4-3x²y²+2y^4
x^4-3x²y²+2y^4
=(x²-2y²)(x²-y²)
=(x-√2y)(x+√2y)(x-y)(x+y)
x^4-3x²y²+2y^4
用十字相乘法:
x^2 -y^2
\ /
/\
x^2 / \ -2y^2
得:
x⁴-3x²y²+2y⁴=(x²-y²)(x²-2y²)=(x+y)(x-y)(x+√2y)(x-√2y)
原式=(x²-y²)(x²-2y²)=(x+y)(x-y)(x+√2y)(x-√2y)