优课网
首页
数学
语文
英语
化学
物理
政治
历史
生物
首页
> 已知x=-4,y=14,求(-xy)3÷(x-2)3的值.-数学
已知x=-4,y=14,求(-xy)3÷(x-2)3的值.-数学
题目简介
已知x=-4,y=14,求(-xy)3÷(x-2)3的值.-数学
题目详情
已知x=-4,y=
1
4
,求(-xy)
3
÷(x
-2
)
3
的值.
题型:解答题
难度:中档
来源:不详
答案
(-xy)3÷(x-2)3
=-x3y3÷(x-6)
=-x9y3,
当x=-4,y=
class="stub"1
4
时,
原式=-(-4)9(
class="stub"1
4
)3
=-(-4×
class="stub"1
4
)3×(-4)6
=4096.
上一篇 :
Some people are bad at recal
下一篇 :
It is illegal for a public o
搜索答案
更多内容推荐
(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
I would like a job which pays more,but ________ I enjoy the work I'm doing at the moment.A.in
We hadn't planned to meet.We met ________ chance.A.ofB.inC.forD.by-高三英语
It’s true that the old road is less direct and a bit longer. We won’t take the new one, ______, beca
计算:(-13)0×3-2=______.-数学
His efforts to raise money for his program were ________ because no one showed any intention to tak
He holds an important position in the company; _____. I don't quite trust him. [ ]A. thus B. fu
Unsatisfied with the payment , he took the job just to get some work experience .A.as was heB.as he
The gate will close ________ two minutes before the train leaves.[ ]A. actuallyB. approximatelyC. re
47. She was disappointed _____ hearing the news that Chinese football team lost the first match in “
计算:22-1-8-(2+1)0.-数学
Mr. Smith was very ill.The doctors said he was ___ of death.A.at the edgeB.at edgeC.on edgeD.on the
计算:(1)8+12+1-2×12(2)(-12)-1-3+(1-2)0+12.-数学
(-2)0的相反数等于()A.1B.-1C.2D.-2-数学
Judging from his face_______ there was a confident smile, we knew that he didn’t lose heart.A.in whi
(1)计算:2sin60°+(-2009)0-12+(12)-1.(2)先化简,再求值:x+1x÷(x-1+x22x),其中x=2+1.-数学
increasing the distance of your walks, you may lose more weight. [ ]A. ByB. FromC. OnD. For-高三英语
计算.①(-2)3+6÷(-12)-1-(-3.5)0②a•a2•a3+(-2a3)2-a7÷a③(x+2)2-(x-1)(x-2)④(m-2n+3)(m+2n-3)-数学
计算:(1)(-1)2004+(-12)-2-(3.14-π)0(2)(2a+3b)(2a-3b)+(a-3b)2(3)20052-2007×2003.-数学
We often associate the name of Li Ning ______ gymnastics.A.with B.byC.toD.in-高三英语
计算:(1)(6-412+38)÷22(2)(π-1)0+|5-27|-48.-数学
After the new equipment was introduced,they produced________machines this year as the year before.[
They say the busiest day of the year, _____ the number of shoppers, is usually the Saturday before C
计算:﹣(﹣2)=_________;|﹣|=_________;=_________.-七年级数学
返回顶部
题目简介
已知x=-4,y=14,求(-xy)3÷(x-2)3的值.-数学
题目详情
答案
=-x3y3÷(x-6)
=-x9y3,
当x=-4,y=
原式=-(-4)9(
=-(-4×
=4096.