化简(5x×2y+5xy-7x)-(4x×2y+5xy-7x)的结果
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化简(5x×2y+5xy-7x)-(4x×2y+5xy-7x)的结果
化简(5x×2y+5xy-7x)-(4x×2y+5xy-7x)的结果
化简(5x×2y+5xy-7x)-(4x×2y+5xy-7x)的结果
(5x×2y+5xy-7x)-(4x×2y+5xy-7x)=(15xy-7x ) - (13xy-7x)=15xy-7x-13xy+7x=2xy
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
化简(5x×2y+5xy-7x)-(4x×2y+5xy-7x)的结果
(4x^2+5xy-7x)-(5x^2y+4xy+x)
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
求(3x^+y^-5xy)-【2x^-(-4xy-y^+7x^)】=?
求(3x^+y^-5xy)-【2x^-(-4xy-y^+7x^)】=?
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
计算.化简4x²+2x+7+3x-8x²-26x²y+2xy-8x²y-4x-5xy+2y²x²-6x²y
(4x²y+5xy-7x)-(5x²y+4xy+x)求解
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)
5x^2y-3xy^2+4xy-14xy^2+4xy-2x^2y(化简)
化简3(x²y+xy)-4(x²y-xy)-5x²y,
化简(3x^2-5xy)+{-x^2-[-3xy+2(x^2-xy)+y^2]}
先化简,再求值:-4x+7x-5-3x-6x+2,其中x=-2分之1 4xy-3x-xy先化简,再求值:-4x+7x-5-3x-6x+2,其中x=-2分之14xy-3x-xy+y+x-3xy-2y+2x+x,其中x=-5,y=-1
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
因式分解:-x平方+4x-4;8(x平方-2y平方)-x(7x+y)+xy,4x三次方-4x平方y-(x-y),x平方y-5xy平方+6y三次方
2X^+XY-Y^-4X+5Y-6
2x^+xy-y^-4x+5y-6=?