>
数学
>
3x²y-{2x²y-3(2xy-x²y-x²y)-xy}
人气:206 ℃ 时间:2019-12-21 07:03:42
解答
3x²y-{2x²y-3(2xy-x²y-x²y)-xy}=3x²y-2x²y+3(2xy-2x²y)+xy=x²y+6xy-6x²y+xy=x²y-6x²y+6xy+xy=-5x²y+7xy
推荐
先化简,再求值 3x2y-[2xy-2(xy-3/2x2y)+xy],其中x=3,y=-1/3.
3(3X²Y-2XY²)-4(-XY²+2X²Y-X),其中X=-1/4,Y=2
(3x²+2xy-½x)-(2x²-xy+xy)
化简求值3x²y-[2xy-2(xy-3/2x²y)+xy]+3xy²其中x=3、y=-1/3
3xy²-2(xy-3/2x²y)+(3x²y-2xy²),其中,x=-2,y=1/2
秘鲁的秘是读mi,还是bi?
关于结构化程序设计的基本知识
How many computers are there in this room?___They aremoved to anther room.
猜你喜欢
一辆汽车违章超车,以108km/h的速度驶入左侧逆行道时,猛然发现正前方80m一辆车以72
照样子写词语 自娱自乐 ( ) ( ) ( ) 闷闷不乐 ( ) ( ) ( ) 兴致勃勃 ( ) ( ) ( )
3 6 9 12 15 18 21 24 27使每横行.竖行.斜行的三个数相加都得45.
在北半球冬至日的时候,下列说法可信的是( ) A.悉尼是冬季 B.雅典进入雨季 C.南极有极夜现象 D.哈尔滨白
what is smaller than an ant‘s mouth 脑筋急转弯 急.要准哦.别错
新闻常识填空(语文题目,回答得完整加10分)
求高斯定理例题与解答
改错:all of the famous singers,jim is the most popular.
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版