作业帮-2x^3y+8x^2y^2-8xy^3
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-2x^3y+8x^2y^2-8xy^3
-2x^3y+8x^2y^2-8xy^3
-2x^3y+8x^2y^2-8xy^3
你是想要因式分解吧?
-2x^3y+8x^2y^2-8xy^3
= -2xy(x^2 - 4xy + 4y^2)
= -2xy(x-2y)^2
-2x^3y+8x^2y^2-8xy^3
=-2xy(x²-4xy+4y²)
=-2xy(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)
计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
已知xy/x+y=2,则代数式3x-5y+8y/-x+3xy-y的值
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
计算：（1）8x^2y^2*(-3x/4y^5) (2)(x+y)^2/xy-y^2*(y-x)^2/xy+y^2
因式分解-x^2y+8xy^2-16y^3
(8y^2-12xy)/(2y-3x)
x平方-2xy-3y平方+8y-4
X^Y-2XY^2+y^3
已知x,y为正整数,并且xy+x+y=71,x^2y+xy^2=880,求3x²+8xy+3y²
x*x-xy=-3,2xy-y*y=-8,求2x*x-4xy+y*y的值
3(x-y)²-7(x-y)+8(x-y)²+6(x-y)求详细过程（2） 5xy-4x²y-8xy²+3xy-xy²+4x²y
(x-y-x+y/4y^2)(x+y-x+y/4x^2)/(3(x+y)-x-y/8xy)拜托各位大神(x-y-x+y/4y^2)(x+y-x+y/4x^2)/(3(x+y)-x-y/8xy)详细,
(8X^3Y-6X^2Y^2-2XY^3)/(3XY)
(8X^3Y-6X^2Y^2-2XY^3)/(3XY)
（12x^2y-8xy^2+16xy）/-3x+2y-4=?