求做几道数学计算-2^3-(-2)^2+(-3)^2-(-1)^3(-2xy^2)^2(-0.5x^2y^3)(-2/3
计算3xy[2xy-x(y-2)+x-1]
计算:3xy[2xy-x(y-2)+x]
计算:(5-xy/x^3-x^2y)/(1-5/xy)^2*(y-x)^3
初二下数学分式计算3y/2x+2y+2xy/x²+xy
计算(3x^3y-x^2y+1/2xy)÷(-1/2xy)
计算3x[xy-2x(1/y-x/3]+3y(x²-y²)
计算:(2分之1x^(2)y-2xy+y^(2))·3xy
计算:(-3x^2y)(1/3xy^2)=?
计算:(-3x^y)(1/3xy^2)=?
计算:(1).(-2xy²)*(3x²y)²
计算3y/(2x+2y)+2xy/x^2+xy
计算:2x+2y分之3y + x²+xy分之2xy