优课网
首页
数学
语文
英语
化学
物理
政治
历史
生物
首页
> 能使有意义的x的取值范围是(▲).A.x>-2B.x≥-2C.x>0D.x≥-2且x≠0-八年级数学
能使有意义的x的取值范围是(▲).A.x>-2B.x≥-2C.x>0D.x≥-2且x≠0-八年级数学
题目简介
能使有意义的x的取值范围是(▲).A.x>-2B.x≥-2C.x>0D.x≥-2且x≠0-八年级数学
题目详情
能使
有意义的
x
的取值范围是( ▲ ).
A.
x
>-2
B.
x
≥-2
C.
x
>0
D.
x
≥-2且
x
≠0
题型:单选题
难度:偏易
来源:不详
答案
B
此题考查二次根式有意义时满足的条件、一元一次不等式的解法:二次根式中被开方数大于等于零,即负数没有平方根;因为使
有意义,所以
,所以选 B
上一篇 :
估计的值是在(▲)A.3和4之间B.4和5
下一篇 :
Experts say walking is one o
搜索答案
更多内容推荐
下列各式中,不是二次根式的是(▲)A.B.C.D.-八年级数学
计算-九年级数学
I ______ in Paris for many years, but I have never regretted my final decision to move back to China
Joy _______ as a language teacher in China for two years before she went back to London.A.had worked
求7的平方根,正确的表达式是().A.B.C.D.-八年级数学
—Did you find the missing couple in the mountain yesterday?—No, but we ______ to get in touch with t
The dictionary still ______ where I ______ it a moment ago.A.lies; laidB.lied; layC.laid; laid D.lie
--- Have you heard that Jenny, along with her classmates, to Harbin for the winter vacation?--- Real
The boy is so naughty that he never his mother.A.disobeysB.obeysC.objectsD.annoys-高二英语
(05·漳州)下列等式成立的是()A.B.3+=3C.="-4"D.=3-九年级数学
(8分)计算:-九年级数学
计算:-九年级数学
Do you think you could ______ his voice on the phone?A.knowB.rememberC.recognize D.realize-高一英语
Don’t disturb me. I_______ letters all morning and have written ten so far.A.have writtenB.am writin
If city noises ___ from increasing, people ___ shout to be heard even at diner.A.do not keep; will h
—That must have been a long trip.—Yeah, it _________ us a whole week to get there.A.takesB.has taken
If you want to ________ a pleasant visit, find out as much as possible about the manners and customs
若-八年级数学
As people ______ more wealth ,they tend to spend a greater share of their incomes.A. adopt B.attachC
要使有意义,则字母x应满足的条件是().A.x=2B.x<2C.x≤2D.x≥2-九年级数学
化简0.5+12-(13-412)-数学
计算:-九年级数学
计算:.-八年级数学
Shirly ________ a book about China last year but I don’t know whether she has finished it.A has writ
函数中,自变量x的取值范围是(▲)A.B.≥C.≤D.>-九年级数学
(6分)设的小数部分为a,的倒数为b,求的值。-九年级数学
一艘轮船先向正东方向航行2小时,再向西北方向航行t小时。船的航速是每小时25千米。试用关于t的代数式表示船离出发地的距离;-八年级数学
– Guess what, we’ve got our visas for a short-term visit to the UK this summer.– How nice! You _____
计算+的结果为。-八年级数学
函数中自变量x的取值范围是()A.x≤0B.x≤-2C.x≤2D.x≥-2-九年级数学
若二次根式在实数范围内有意义,则x的取值范围是.-九年级数学
---- Sorry, I am late. The bus was _________ in the traffic. ----- Oh, never mind. It doesn’t matter
A friend is like a mirror. When you stand in front of a true friend, what is ____back to you?A.refle
My train arrives in Beijing at eight o’clock tonight. The plane I would like to take from there ____
计算:=.-八年级数学
计算:2327+634=______.-数学
函数中,自变量的取值范围是-八年级数学
In the summer, large crops of fruit may be_______ by freezing or bottling.A.reserved B.deserved C.se
若为非负实数,则关于的说法正确的是()A.表示数的平方根B.比小C.一定是无理数D.在数轴上一定能找到表示数的点-八年级数学
下列命题中,错误的是()A.关于x的一元二次方程,必有两个互为相反数的实根;B.关于x的方程必有两实根;C.关于x的一元二次方程必有一根为零;D.关于x的方程可能没有实根.-九年级数学
Many students apply for a position at that company, but only a few _____.A.are being acceptedB.are a
--- Any news about the fire?--- Nearly 20 people ______ from the burning building by now.A.rescuedB.
Whenever Steve sang in the shower, his voice _______ throughout the house.A.has rungB.would ringC.wa
It is reported that the guy who is going to _________ the lecture spent a year living in the rain fo
计算的值为A.B.C.D.-八年级数学
a与2a的和为()A.3aB.5aC.3aD.5a-数学
How did you ___ to paint the whole house in a week?A.tryB.manageC.winD.succeed-高一英语
(每小题4分,共8分)(1)计算:;(2)解方程:(3x+2)2-4=0-九年级数学
--- May I visit you at 10 o’clock tomorrow morning?--- I’m afraid I ______ a document for my boss th
The salespeople said they hadn’t overcharged customers, but the police’s report showed that the prac
返回顶部
题目简介
能使有意义的x的取值范围是(▲).A.x>-2B.x≥-2C.x>0D.x≥-2且x≠0-八年级数学
题目详情
答案