先分解因式后求值,18X²(x-2y)²-24xy(2y-x)²-6x(2y-x)³ x=-3 y=-1
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/07 21:37:53
先分解因式后求值,18X²(x-2y)²-24xy(2y-x)²-6x(2y-x)³ x=-3 y=-1
先分解因式后求值,18X²(x-2y)²-24xy(2y-x)²-6x(2y-x)³ x=-3 y=-1
先分解因式后求值,18X²(x-2y)²-24xy(2y-x)²-6x(2y-x)³ x=-3 y=-1
18X²(x-2y)²-24xy(2y-x)²-6x(2y-x)³
=18X²(x-2y)²-24xy(x-2y)²+6x(x-2y)³
=6x(x-2y)²(3x-4y+x-2y)
=6x(x-2y)²(4x-6y)
=12x(x-2y)²(2x-3y)
=12x(-3)x(-3+2x1)²(-3x2+3x1)
=-36x1x(-3)
=108
如果本题有什么不明白可以追问,