作业帮x^3+x+30x^2-4xy+4y^2+7x-14y+12
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x^3+x+30x^2-4xy+4y^2+7x-14y+12
x^3+x+30
x^2-4xy+4y^2+7x-14y+12
x^3+x+30x^2-4xy+4y^2+7x-14y+12
x^3+x+30
=x^3+27+x+3
=(x+3)(x^2-3x+9)+x+3
=(x+3)(x^2-3x+10)
x^2-4xy+4y^2+7x-14y+12
=(x-2y)^2+7(x-2y)+12
=(x-2y+4)(x-2y+3)
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
（-3x^y+2xy)-( )=4x^+xy
x^3+x+30x^2-4xy+4y^2+7x-14y+12
化简2(x²y+xy)-3(x²y-xy)-4x²y
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
因式分解：x(y-3)-(2y-6) (x+y)^3-(x-y)^2(x+y) x(x^2-xy)-(4x^2-4xy)
分解公因式分解 x(y-3)-(2y-6) 2.(x+y)^3-(x-y)^2(x+y) 3.x(x^2-xy)-(4x^2-4xy)
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)
3(x^2y+xy)-4(xy-2x^2y)-(-xy)
当x-y=2xy时,求4x-3xy-4y/xy
XY(XY+3)+(XY+4)+4(X+Y+1)-(X+Y+2)
-4x^2×(二分之一xy-y^2)-3x×(xy^2-2x^2y)
3（x平方y+xy)-4(xy-2x平方y)-(xy)
求（3x^+y^-5xy）-【2x^-（-4xy-y^+7x^）】=?
求（3x^+y^-5xy）-【2x^-（-4xy-y^+7x^）】=?