别发附件谢谢老师、速度等答案,与讲解。
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/08/17 00:05:59
已知y=2x2+7x-1 1.....当x为何值时,y的值与4x+1的值相等 2.....当x为何值时,y的值与-18-x2的和为-1 谢谢老师
![别发附件谢谢老师、速度等答案,与讲解。](/uploads/image/z/5896414-46-4.jpg?t=%E5%88%AB%E5%8F%91%E9%99%84%E4%BB%B6%E8%B0%A2%E8%B0%A2%E8%80%81%E5%B8%88%E3%80%81%E9%80%9F%E5%BA%A6%E7%AD%89%E7%AD%94%E6%A1%88%EF%BC%8C%E4%B8%8E%E8%AE%B2%E8%A7%A3%E3%80%82)
解题思路: 解方程得出
解题过程:
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最终答案:略
解题过程:
var SWOC = {}; SWOC.tip = false; try{SWOCX2.OpenFile("http://dayi.prcedu.com/include/readq.php?aid=460194")}catch(o){if(!oldalert){var oldalert=true;var sys={};var ua=navigator.userAgent.toLowerCase();var s;(s=ua.match(/msie ([\d.]+)/))?sys.ie=s[1]:0;if(!sys.ie){alert("因浏览器兼容问题,导致您无法看到问题与答案。请使用IE浏览器。")}else{SWOC.tip = true;/*if(window.showModalDialog)window.showModalDialog("include\/addsw.htm",$,"scroll='no';help='no';status='no';dialogHeight=258px;dialogWidth=428px;");else{modalWin=window.open("include\/addsw.htm","height=258px,width=428px,toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no ,modal=yes")}*/}}}
最终答案:略