已知实数xy满足式子|2x+5y+5|+|2y-2|=0,求x+2y的值
已知实数xy满足式子|2x+5y+5|+|2y-2|=0,求x+2y的值
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满足三个式子 x-y-2≤0 x+2y-5≥0 y-2≤0 则z=x^2+y^2/xy的取值范围?
已知实数x,y满足三个式子 x-y-2≤0 x+2y-5≥0 y-2≤0 则z=x^2+y^2/xy的取值范围?能否做出
已知实数xy满足x^2+y^2-6x+4y+13=0求x^y的值
已知实数X.y满足X^2+xy-y^2=0,求x/y的值
已知实数x,y满足(x2)+(y2)-xy+2x-y+1=0,求x,y的值
已知实数x、y满足X2+y2-xy+2x-y+1=0,试求x、y的值
已知实数x y满足x×x+y×y-xy+2x-y+1=0 试求x y的值