(2yx^3-3x^2y+4xy^3)除以(-2x)除以(-y)
已知x-y=4xy,则2x+3xy-2yx-2xy-y
y^2-x^2\5x^2-4yx除以x+y\5x-4y
3xy+xy+2x²y+yx²+3x²y等于多少
x除以3=y除以4,求分式x^2+y^2分之x^2-xy
xy除以x+y等于2,xz除以x+z等于3,yz除以y+z等于4,求x,y,z 的值
已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.
负3xy除以/3x分之2y^2
计算3xy除以-3x分之2y
[x(x^2y^2-xy)-y(x^2-x^3y)]除以3x^2y
3x^2y-3xy^2+6yx^2-9y^2x
实数x、y、z满足x=6-3yx+3y-2xy+2z
已知y=3xy+x,求代数式2x+3xy−2yx−2xy−y