若代数式
取得最大值,则方程
的解是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d8c4033eb786b0d0c74527243806e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476a64342f0da87ba7571ec80bdfa719.png)
更新时间:2021-01-11 07:37:15
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【知识点】 解一元一次方程(一)——合并同类项与移项解读
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【推荐1】定义:若两个有理数的和等于这两个有理数的积,则称这两个数是一对“友好数”.如:有理数
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,所以
与4是一对“友好数”.设
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【推荐2】已知x=﹣2时,二次三项式x2﹣2mx+4的值等于﹣4,当x=_____ 时,这个二次三项式的值等于﹣1.
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