(-4x^6-20x^4y^2-12x^3y+6x^3y^2)除以[-(-2x)^3] 速度解,过程要
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(-4x^6-20x^4y^2-12x^3y+6x^3y^2)除以[-(-2x)^3] 速度解,过程要
(-4x^6-20x^4y^2-12x^3y+6x^3y^2)/[-(-2x)^3]=(-2*2x^6-10*2x^4y^2-6*2x^3y+3*2x^3y^2)/(2x)^3=-2x^3-10xy^2-6y+3y^2
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
化简(x+y)-(2x+y/2)-(3x+y/6)-(4x+y/12)-(5x+y/20)-……-(10x+y/90)
已知2x-y/x+3y=2,求代数式4x-2y/x+3y减4x+12y除以2x-y
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
解方程组X+Y除以2+X—Y除以3=6和4(X+Y)—5(X—Y)=2
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8
[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以4x
解方程:3x+2y/4=2x+y/5=x-y+1/6要详细过程
[(5x+2y)(3x+2y)+(x+2y)(x-2y)]除以4x