优课网
首页
数学
语文
英语
化学
物理
政治
历史
生物
首页
> (1)计算:-22-3×3-1+(3-2)0+2sin30°;(2)解分式方程:5x-4x-2=4x+103x-6-1.-数学
(1)计算:-22-3×3-1+(3-2)0+2sin30°;(2)解分式方程:5x-4x-2=4x+103x-6-1.-数学
题目简介
(1)计算:-22-3×3-1+(3-2)0+2sin30°;(2)解分式方程:5x-4x-2=4x+103x-6-1.-数学
题目详情
(1)计算:-2
2
-3×3
-1
+(
3
-2)
0
+2sin30°;
(2)解分式方程:
5x-4
x-2
=
4x+10
3x-6
-1
.
题型:解答题
难度:中档
来源:贺州
答案
(1)原式=-4-3×
class="stub"1
3
+1+2×
class="stub"1
2
=-3.
(2)方程两边同乘3(x-2),
得3(5x-4)=4x+10-3(x-2),
解得x=2.
检验:当x=2时,3(x-2)=0,
∴x=2是增根,原方程无解.
上一篇 :
To be honest, I tend to agre
下一篇 :
(2013·辽宁高考)________ eve
搜索答案
更多内容推荐
—I’m sincerely inviting you to join our chess club, Mr Turban.—Thanks, but I’m not ________as any of
己知(43)2n=(34)n-3,则n的值是()A.0B.1C.-1D.n的值不存在-数学
计算:x-2-y-2x-1+y-1(计算结果不含负整数指数幂)-数学
________ development, a multicultural society is believed to have more advantages ______onethat is m
20120+2-2-(12)2+2012.-数学
I'm working this evening because I am ________ schedule with my work.A.behind B.beyondC.over D
_____ let the other team win, the footballer took money for ______ not scoring goals. A.In order to;
(2013·江苏高考)I am always delighted when I receive an email from you.________ the party on July 1st I s
_______, people injured in the earthquake are _______. A.Generally; picking upB.Sadly; picking upC.L
若(2x-3)x+3=1,则x=______.-数学
(1)计算:(-1)2011+3×13-|1-3|+(3.14-π)0(2)先化简,再求值:(3xx-1-xx+1)-x2-1x,其中x=2-2.-数学
As a student in Senior Three, I must work hard.______, I should take exercise to strengthen my body.
The job is great _____ salary,but it has its disadvantages.A.other thanB.except forC.in view of D.in
计算(1)4(2-x)2=9(2)(π-2)0-30.125+4(3)-2(x-3)3+16=0.-数学
计算:(-1)2004+(-12)-2-(3.14-π)0.-数学
Highspeed trains which travel through my hometown ________ up to 250 km per hour make it a sma
(2013·安徽高考)Before you pay a visit to a place of interest, look in your local library ________ a book
He has decided to settle _____ in France because he is fond of the romantic country.A.temporaryB.tem
计算:2-1-(-12+32)0=______.-数学
若0<x<1,则x-1、x、x2的大小关系是()A.x-1<x<x2B.x<x2<x-1C.x2<x<x-1D.x2<x-1<x-数学
Some people are bad at recalling names and faces, so it's possible that they have a condition c
已知x=-4,y=14,求(-xy)3÷(x-2)3的值.-数学
It is illegal for a public official to ask people for gifts or money ________ favors to them.A.in pr
(2013·山东高考)The Smiths are praised ________ the way they bring up their children.A.fromB.byC.atD.for-
计算:(1)(-2xy2)3+4xy2-12x2y4;(2)(-1)-2+(12)-2-5÷(π-3)0;(3)用简便方法计算:20092-2010×2008;(4)[(x+y)(x-y)-(x-y)
Anyone, whether he is an official or a bus driver, should berespected.A.especiallyB.naturallyC.equal
计算:(12)-3•sin30°-(-1)2-2tan60°3-1=______.-数学
She was so angry and spoke so fast that none of us understood ______ he said meant.A.thatB.whatC.th
①计算:|-1|-4+(π-3)0+2-2②解方程:xx+3=1x-2+1.-数学
若代数式(x+1)0有意义,则x______.-数学
Our company has arranged me to go on a business trip to Shenzhen next week,but I will drop in on my
He invited me to a dance after the show ________ Christmas Eve.A.atB.onC.inD.by-高三英语
(2012·北京高考)Do you think this shirt is too tight ________ the shoulders?A.atB.onC.toD.across-高三英语
计算(1)(-2)3+12(2004-3)0-|-12|(2)27-123(3)-32003-(13)2002+12(4)(-13)5×67×(12)6(5)23(18-250)(6)(48-418)
The ship will go faster if we sail _________ the wind. A.byB.forC.withD.after-高三英语
(温州)计算:12+12-3-(2+3)0=______-数学
计算:9+(π-2012)0-2cos45°.-数学
He was a good student and scored ________ average in most subjects.A.belowB.ofC.onD.above-高三英语
_____entering the classroom, remember to take your seat and turn off your cell phone.A.AtB.FromC.Upo
Wuhan and Chongqing are among the most important cities in China ________ their size and population.
Tom works very hard. His brother, ______, doesn’t do anything at all. A.for another thingB.what’s wo
(1)1022(必须乘法公式才得分);(2)(-2)2-20110+2-2.-数学
计算:(π-3)0÷(-12)3-(13)-2=______.-数学
The furniture,with its modern style and bright colors,suits modern houses and their gardens,but look
_____ being too large, the color and the style of the dress suit me well.A.Apart fromB.As well asC.
3-2的算术平方根是()A.13B.3C.16D.6-数学
It is well-known that humans differ _____ other mammals in their ability to speak.[ ]A. withB. betwe
The company takes in any good workers _______ sex, age or background.A.regardless ofB.on account ofC
I’ll probably come to see you on Sunday; ________, it will be on Monday.A.thusB.thenC.after allD.if
计算12+3-2-1+cos60°+20050+12.-数学
返回顶部
题目简介
(1)计算:-22-3×3-1+(3-2)0+2sin30°;(2)解分式方程:5x-4x-2=4x+103x-6-1.-数学
题目详情
(2)解分式方程:
答案
(2)方程两边同乘3(x-2),
得3(5x-4)=4x+10-3(x-2),
解得x=2.
检验:当x=2时,3(x-2)=0,
∴x=2是增根,原方程无解.