Example 1 : Solve the following quadratic equations, leave the answers in surd form.

例 1: 解下列的二次方程, 如果需要,以根式表示.

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重点词汇

相关例句

1、

The square root of 5 is a surd.

5的平方根是不尽根.
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2、

‘Is that John over there? ’ ‘ I'm not sure . ’

“那边那个人是约翰吗？”“我说不准。”
来源：《牛津高阶英汉双解词典》
3、

I'm pretty sure (that) he'll agree.

他会同意的，对此我有相当的把握。
来源：《牛津高阶英汉双解词典》
4、

Are you sure you don't mind?

你确实不在意？
来源：《牛津高阶英汉双解词典》
5、

You don't sound very sure.

听你这口气，你自己也不大肯定。
来源：《牛津高阶英汉双解词典》
6、

He will come sure enough.

他必来无疑.
来源：《现代英汉综合大词典》
7、

Heavens! he was in for it now, sure enough.

天哪, 现在他肯定脱不了关系了.
来源：英汉文学 - 嘉莉妹妹
8、

'Now,'said he,'there's your friends, sure enough.'

“ 好了, ” 他说, “ 你的朋友就在那里, 没错. ”
来源：英汉文学 - 金银岛
9、

Sure enough, everything was fixed up very quickly.

事情果然办得很快.
来源：汉英文学 - 骆驼祥子
10、

He said he would come, and sure enough he came.

他说过要来, 果然,他来了.
来源：《简明英汉词典》
11、

Sure enough, it did develop.

的确如此, 事情有了发展.
来源：英汉文学 - 嘉莉妹妹
12、

Sure enough, there was Tom Sawyer waiting for me.

果然不错, 又是汤姆·索亚在那儿等我哩.
来源：词典精选例句
13、

We're always sure of a friendly welcome at this hotel.

我们在这家宾馆总是受到友好的欢迎.
来源：《简明英汉词典》
14、

It is said she is quite sure of success.

据说她很有成功的把握.
来源：《现代汉英综合大词典》
15、

He is sure of himself.

他很自信.
来源：《简明英汉词典》
16、

I am not sure of what he has said at the meeting.

他在会上说了些什么我不太清楚.
来源：《简明英汉词典》
17、

Fight no battle you are not sure of winning.

不打无把握之仗.
来源：《现代英汉综合大词典》
18、

Are you sure ( of it )?

你能肯定吗 ?
来源：《现代英汉综合大词典》
19、

Sure thing. This is Mike with ABC Enterprise.

没问题. 我是ABC企业公司的迈克.
来源：轻松英语会话---联想4000词(上)
20、

If the opponent's heart breaks 3-2 , I have a sure thing.

如果对方的红桃是3-2分配, 我就稳操胜券了.
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