>
数学
>
(2a-3)(3a+1)-6a(a-4),其中a=2
人气:214 ℃ 时间:2020-04-13 12:44:42
解答
:(2a-3)(3a+1)-6a(a-4) =6a+2a-9a-3-6a+24a=17a-3 ∴当a=2时,17a-3=17×2-3=31
推荐
(2a+b)(2a-b)+3(2a-b)^2+(-3a)(3a-4b)+(4a^5-6a^3)/(-2a^3),其中a=-1,b=1/2
数学题一道,要过程(6a^3+3a^2)÷1/2a
若3a-a=1,则6a-2a+3=
3a+(-6a+2)-(3-2a)怎么写啊
(3a^2)^3-6a^3(2a^2+3a^2+a)
有40克食盐溶液,若加入200克水,它的浓度就减少10%.这种溶液原来有多少克水?原来浓度是多少?
请问BEC高级的各题的分数比例是多少?每一部分各占多少分
古诗词中描写鱼的诗句,
猜你喜欢
There was a big river and tow hills in my hometown ten years ago.
诗经采薇表达了什么的思想感情
clothing made of the man-made fiber has certain advantages over() made of natural fiber like cotton
连续的两句含有"杜鹃"的古诗句.
若等差数列{an}的公差d≠0,且a1,a3,a7成等比数列,则a1a4=( ) A.12 B.25 C.2 D.52
一元二次方程-已知关于x的方程x^2+px+q=0的两个根式-1和-3,求p和q的值
About twice a week my driver collects me from school.l go and have lunch with a client
十年树木百年树人的意思
© 2026 79432.Com All Rights Reserved.
电脑版
|
手机版