2x^3-8x^2y+8xy^2
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2x^3-8x^2y+8xy^22x^3-8x^2y+8xy^22x^3-8x^2y+8xy^22x^3-8x^2y+8xy^2=2x(x^2-4xy+4y^2)=2x(x-2y)^22x（x-2y）
2x^3-8x^2y+8xy^2
2x^3-8x^2y+8xy^2
2x^3-8x^2y+8xy^2
2x^3-8x^2y+8xy^2
=2x(x^2-4xy+4y^2)
=2x(x-2y)^2
2x（x-2y）^2
化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
已知xy/x+y=2,求代数式8x-5xy+8y/-x+3xy-y的值
诺x+y=6,xy=4 求(5x-4y-3xy)-(8x-y+2xy)
因式分解:8(x-2y)-x(7x+y)+xy.
3x-2xy-8-2x+6xy-x²+6、-x²+2xy-y²-3x²-2xy+2y²合并同类项
已知xy/x+y=2,则代数式3x-5y+8y/-x+3xy-y的值
2x^3-8x^2y+8xy^2
(8X^3Y-6X^2Y^2-2XY^3)/(3XY)
(8X^3Y-6X^2Y^2-2XY^3)/(3XY)
（12x^2y-8xy^2+16xy）/-3x+2y-4=?
(12x^2y-8xy^2+16xy）/-3x+2y-4=?
分解因式（x^2+3x+2)(3+8x+4x^2)-90xy(xy+1)+(xy+3)-2(x+y+0.5)-(x+y-1)^2
-4x²y-8xy²+2x²y-3xy²
-4x²y-8xy²+2x²y-3xy²
（5x-4y-3xy）+（8x+y-2xy)合并同类项
因式分解：3x^2y+6xy-4x-8
因式分解 3x^2-6xy-4x+8y
[-xy^2(2x+y)-8xy)-x^2y)]除以2xy=计算