更多内容推荐
-
The railway station was overflowing with people _______ back home for the Spring Festival.A.to headB
-
先化简,再求值:(3xx-1-xx+1)•x2-1x,其中x=3.-数学
-
People drank a kind of tea _________ from leaves _________ a special chemical to reduce body pains a
-
Tsinghua University, ______ in 1911, is home to a great number of outstanding figures.A.foundB.found
-
Jim was ashamed of himself for _______ rude words to the beggar in the street the week before.A.havi
-
____ through Africa, the infectious disease jumping from children to adults killed 1,000 people.A.Sw
-
(1)计算18+1550-612-2sin45°+13tan260°(2)先化简,再求值:(1x-y-1x+y)÷2yx2-2xy+y2,其中x=1+2,y=1-2.-数学
-
计算(1)a+2a2-2a•a2-4a+4a+2(2)(2xx-2-xx+2)÷xx2-4.-数学
-
It was freezing last night, so they had the fire___ all night long.A.to burnB.burnedC.burnD.burning
-
We are looking forward to ______ the problem of the traffic accident______.A.see; solvingB.see; to s
-
化简(1)a+ba-b+ab-a(2)(2yy-3-yy+3)•y2-9y.-数学
-
先化简,再求值:(3xx+2-xx-2)÷2xx2-4,其中x=4-5.-数学
-
先化简,再选择使原式有意义而你喜欢的数代入求值:2x+6x2-4x+4•x-2x2+3x-1x-2.-数学
-
It was all your own fault, so you can’t avoid ____ for it. A.to be punishedB.to punishC.being punish
-
That was a terrible night . The rain was pouring down, _________ thunder and lightning.A.being accom
-
先化简,再求值:(a-1+2a+1)÷(a2+1),其中a=2-1.-数学
-
The supermarket next month will be the biggest one in the city.A.completedB.being completedC.to be c
-
After hearing the bad news, Susan found herselfof it from time to time while at work.A.to thinkB.thi
-
The elderly mother sits in the armchair,at the family picture on the wall quietly.A.staringB.being s
-
计算:(a-1+4aa-1)(1+a-4aa+1).-数学
-
While watching TV, _.A.the telephone rangB.the telephone was ringingC.the telephone was heard ringD.
-
It is a truth universally ______ that a single and rich man must be in want of a wife.A.achnowledgin
-
先化简,再求值:(1x2-2x-1x2-4x+4)÷2x2-2x,其中x=1.-数学
-
--The first one ________ the finishing line wins the gold medal.--True!A.reachesB.reachedC.to reachD
-
先化简(1x-1-1x+1)÷x2x2-2,然后从-1,1,2中选取一个数作为x的值代入求值.-数学
-
化简分式(y-2y+2-y+2y-2)•y2-2yy2,并选一个你喜欢的值代入求分式的值.-数学
-
He explained to the class what he suggested ____ his idea ____.A.to make, acceptedB.making, agreed t
-
--Did Peter repair his bike?--He _______, because he could’t do that himself.A.had it repairedB.had
-
Would you please make up a topic worth______ at tomorrow’s meeting?A.discussingB.discussedC.to be di
-
________ so delicious, the food in this market was sold out soon.A.TastedB.TastingC.Being tastedD.Ha
-
有这样一道题:计算x+x2-4x-x2-4+x-x2-4x+x2-4-x2(x>2)的值,其中x=1005.某同学把“x=1005”错抄成“x=1050”,但他的计算结果是正确的,请回答这是怎么回事?
-
_______ with care, one paper-bag will last for six weeks.A.Use B.Using C.Used D.To use-高三英语
-
Song Zuying became the first Chinese singer _______ a solo concert at the Vienna Golden Hall , _____
-
One of the world’s largest art galleries is the Louvre, ______ in Paris, which is also famous for it
-
The boy insisted ______ in a nearby school. A.to be taughtB.being taughtC.on being taughtD.on teachi
-
计算:。-九年级数学
-
先化简,再求值:(x+2x2-2x-x-1x2-4x+4)÷x2-16x2+4x,其中x=2+2.-数学
-
先化简,再求值:(2a-1-1a+1)×(a2-1),其中a=3-3.-数学
-
先化简,再求值:(x2+4x-4)÷x2-4x2+2x,其中x=-1.-数学
-
先化简,再求值:当a=2+时,=()。-八年级数学
-
Little Tom went to the stadium in a hurry, only ____________ the game had been put off.A.Being infor
-
North Korean(朝鲜)leader Kim Jeong-eun has sent urgent messages to world leaders Saturday, ________ t
-
My classmate regretted ______ me that they had regretted _____ paying a visit to the car show yester
-
.I think I had at least a billion test, __ one in which they cut out a piece of muscle from my leg.
-
Today my job at home is ______ and my father’s is ______.A.to wash clothes; to cook dinnerB.washing
-
twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in th
-
先化简再求值,其中,-八年级数学
-
将代数式尽可能化简,并选择一个你喜欢的数式入求值:2a-(a+1)+a2-1a-1.-数学
-
For some reason, we hurriedly ended our meeting, a lot of problems to be settled.A.leaving B.to lea
-
先化简,再求值:(1-1x)÷x2-2x+1x2-1,其中x=2.-数学
题目简介
(1);(2)化简:.-八年级数学
题目详情
(2)化简:
答案
(2)原式=