首页
登录
职称英语
Which of the following is the coefficient of xy in(3x+4y-xy)(4x+3y+1)?A、9B、24C
Which of the following is the coefficient of xy in(3x+4y-xy)(4x+3y+1)?A、9B、24C
游客
2024-01-12
36
管理
问题
Which of the following is the coefficient of xy in(3x+4y-xy)(4x+3y+1)?
选项
A、9
B、24
C、16
D、15
E、25
答案
B
解析
题目中问的是xy项的系数,没有必要把(3x+4y-xy)(4x+3y+1)的每一项都表示出来。关于xy项,有3x×3y,4y×4x,-xy×1,所以xy的系数为9+16-1=24,选择B。
转载请注明原文地址:https://tihaiku.com/zcyy/3354939.html
相关试题推荐
OnSaturdayMelvinsuggestedthatJerometakethefollowingweekofffromworka
Whichoneofthefollowing,iftrue,moststronglysupportstheactivist’sclai
Whichofthefollowingbestcompletesthepassagebelow?Establishedcompaniesc
Whichofthefollowingbestcompletesthepassagebelow?Themoreworriedinvest
Whichofthefollowingbestcompletesthepassagebelow?Peoplebuyprestigewhe
[img]2014m11x/ct_egmatvj_egmatvlogic_0457_201410[/img]Whichofthefollowingca
Followingthenutritionboard’sadviceonsaltconsumptionwouldmeanavirtual
Whichofthefollowing,iftrue,mostlogicallycompletesthepolitician’sargum
Whichofthefollowingmostlogicallycompletestheargument?Whenofficialsin
Whichofthefollowingmostlogicallycompletesthereasoning?Eitherfoodscarc
随机试题
PASSAGETWO[br]Whatdoestheauthorfocusoninthepassage?Whetherdifferent
Naturalflavoringsandfragrancesareoftencostlyandlimitedinsupply.Fo
Stocks,bonds,landpeopleinvestindifferentthingsand(1).Butallinve
Whowasfamousforattackingtwobigpressbarons?A、BrimeMinisterTonyBlair.
很多地方为了举办大型赛事,投入巨资修建体育场馆,但是往往承办完一次大型活动后,场
D
木材1出现的节点有几个?() A.1 B.2 C.3
Thechangeinthatvillagewasmiraculou
与有形市场相比,无形市场的典型特征不包括()。A.交易场所不固定 B.交
某大型机械制造企业新安装的一台货梯于2015年8月1日取得检验合格证,该企业的设
最新回复
(
0
)