本文目录一览1,3250等于几2,x2x50解答步骤3,解方程X24X504,解不等式x24x505,5x2x1x2x0怎么做6,m2150m7,若xy5xy620求x2y2的值要详细步骤啊1,3250等于几5x0=0加起来是52,x2x50解答步骤x2-x+5≤0x2-x+1/4+19/4≤0(x-1/2)2+19/4≤0(x-1/2)2≥0,x是无解的3,解方程X24X505和-15或-1x2-4x-5=0(x+1)(x-5)=0x=-1或x=54,解不等式x24x50x2-4x+5<0x2-4x+4