已知实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0,求式子(-2xy)²×(-y
已知实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0,求式子(-2xy)²×(-y
已知实数x,y满足条件2x-3y+1的绝对值+(x+3y+5)^2=0,求式子(-2xy)^2×(-y^2)×6xy^2
已知实数x y满足条件|2x-3y+1|+(x3y+5)的二次方=0求式子(-2x*y)的二次方(-y的二次方)×6xy
已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y
已知实数x,y满足5x^2-3xy+1\2y^2-2x+1\2y+1\4=0,求x,y的值
已知实数x、y满足5x²-3xy+1/2y²-2x+1/2y+1/4=0 求x、y的值
已知实数xy,满足10x²-2xy+y²+6x+1=0,求x+y
已知实数xy满足x²﹢y²-xy+2x-y+1=0求xy
已知实数x,y满足条件{2x-y+1≥0,2x+y≥0,x≤1,求z=x+3y的最小值.
已知正实数xy满足x+y=1,求1/(2x+y) +4/(2x+3y)最小值
已知实数x,y满足根号(x+3y-1)+y²+2y+1=0,求2x-y的平方根
已知实数x、y满足(x+1)²+(|2y|-1)²=0,求xy的值