首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
计算:(-4x-y)(-5x+2y)
查看本题答案
包含此试题的试卷
教案备课库《8(2)年级数学作业多项式与多项式作业》真题及答案
点击查看
你可能感兴趣的试题
先化简再求值4xy﹣[x2+5xy﹣y2﹣2x2+3xy﹣y2]其中x=﹣1y=2.
多项式x3y2-2x2y3+4xy4z的公因式是
xy
2
4xy
xy
2
z
xyz
先化简再求值.4xy﹣[x2+5xy﹣y2﹣2x2+3xy﹣y2]其中x=﹣1y=2.
.下列各组式子中是同类项的是
4x与4 y
4y与4xy
4xy
2
与4x
2
y
4xy
2
与4y
2
x
计算[x+y2-x-y2]÷4xy的结果为
1
2xy
计算[x+y2-x-y2]÷4xy的结果为
1
2xy
将4x3y-8x2y2+4xy3分解因式结果为
xy(2x-2y)
2
2xy(x-y)
2
4xy(x
2
-2xy+y
2
)
4xy(x-y)
2
已知多项式2x2﹣4xy﹣y2与﹣4kxy+5的差中不含xy项则k的值是__________.
计算﹣2x3y234xy2=.
[x-y2—x+y2]÷—4xy
先化简再求值4xy﹣4x2+2xy﹣23xy+10其中x=1y=﹣2.
已知x﹣32+|y+2|=0求4xy﹣2x2+5xy﹣y2+2x2+3xy的值.
先化简再求值2xy﹣4xy﹣8x2y2+23xy﹣5x2y2其中xy满足x﹣12+|y+2|=0.
先化简再求值5x+13y﹣4xy﹣26x+5y﹣2xy其中x=﹣3y=﹣1.
计算﹣2x2y3÷﹣4xy2
化简求值2x﹣3y﹣4xy﹣x﹣4y+2xy其中x+y=5xy=﹣3.
2x2y﹣2xy﹣4xy2+xy+4x2y﹣3xy2
下列计算错误的是
(
-2)
0
=1
28x
4
y
2
÷7x
3
=4xy
2
(4xy
2
-6x
2
y+2xy)÷2xy=2y-3x
(a-5)(a+3)=a
2
-2a-15
先化简再求值.4xy﹣[x2+5xy﹣y2﹣2x2+3xy﹣y2]其中x=﹣1y=2.
列计算错误的是
(
-2)
0
=1
28x
4
y
2
÷7x
3
=4xy
2
(4xy
2
-6x
2
y+2xy)÷2xy=2y-3x
(a-5)(a+3)=a
2
-2a-15
热门试题
更多
You'dbetter whatyoudecideclearlybeforeyouspreadthewords.
Asforyourgradesweconsideryoutakesomemoreafter-schoolclasses. A.make B.made C.tomake D.making
Pleasedon'tmeasanimmature不成熟的youngman.Ihavenevermademyparentsworriedaboutme.
Parentsmaybelievethatthemoreclassestheteenagerstakethebetteritisfortheirfuture.Infactitcangojustthe.
Theysearchtheboysince2daysago.
It'sathatyouwasteyourtimelikeit'sworthnothing.
—Couldyoupleasehelpmetheoldtoolsinthegarden? —Therearetoomanyuselessones. A.cleanup B.clearup C.cleanout D.clearout
TobeIdidn'tlikeyourpaintingatall.
Theradiothesnowwillstoplateron. A.says B.tells C.talks D.speaks
—Therearemanytalltreesintheschool. —Childrenlovetoplayunderthetreesinsummer.
Sheusedtobemydearfriend.Wewereclosedtoeachother.
—Howmanyarethereinadollar? —Thereareabout100.
Allhewantsistobeaanofacoffeeshop.own
PleasekeepholdupthephoneJaneiscomingsoon.
There'sthatfailintheexamforonce.Allyouhavetodoistoworkharder. A.anythingshame B.shameanything C.nothingshameful D.shamefulnothing
OldFranklinissoproudofhissuccessthathenamedhissonFranklin.
—HeyJennyyourhometownisreallybeautiful!一YesIhaveforthepastfewyearsbutIstilllovethistown.Ioftencomebacktostayforafewdayswhenholidays.A.beento B.beenaway C.beenin D.beenback
Thevegetablesgointhehotwaterwhilecooking.
Theboyfeelssadtohisyoungersister.Buthehastogoabroadwithhisclassmates.A.waitfor B.goaway C.partwith D.takepart
Simonishonestboy.Nowhe'sstudyingatuniversity. A.aan B.ana C.thea D.athe
Shelikestoeatsomethingsweethermotherlovessomethingspicy. A.or B.and C.unless D.while
You'reagoodboy.I'msoproudofyourhonestasyourmother.
如图10-2-5所示一个重为10N的铁块用轻质细线系着浸没在水中静止时铁块排开水的重力为6N则铁块受到的浮力是N细线对铁块的拉力是N.
Hereistheweatherreportthenexttwenty-fourhours. A.at B.for C.in D.to
—hastheconcerthallbeenthere?—Ithasbeentherefor20years.A.Howoften B.Howlong C.When D.Howfar
Thepoliceeverywhereforthelosingkid.Luckilyhewasjustplayingaround.
Nomatterhowsheexpressedherfeelingsaretruth.
Agroupoflyingonthebeach. A.childrenare B.childrenis C.childare D.childis
—Howmuchisthisbook?—Youcanhaveit75cents.A.as B.fromC.fromD.at
winteritisverycoldMoscow. A.Inat B.Inin C.Onin D.Inon
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库
教案备课库