help!要简算的.(1)1*2*3+2*4*6+7*14*21 (2)1*3*5+2*10+7*21*35
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 04:13:04
help!要简算的.(1)1*2*3+2*4*6+7*14*21(2)1*3*5+2*10+7*21*35help!要简算的.(1)1*2*3+2*4*6+7*14*21(2)1*3*5+2*10+7
help!要简算的.(1)1*2*3+2*4*6+7*14*21 (2)1*3*5+2*10+7*21*35
help!要简算的.
(1)1*2*3+2*4*6+7*14*21
(2)1*3*5+2*10+7*21*35
help!要简算的.(1)1*2*3+2*4*6+7*14*21 (2)1*3*5+2*10+7*21*35
1.
(1+2+7)(1*2*3)=60
2.
(1+2+7)(1*3*5)=150
1*2*3+2*4*6+7*14*21
=1*2*3+2*(1*2*3)+7*(1*2*3)
=(1+2+7)*1*2*3
=10*1*2*3
=60
1*3*5+2*6*10+7*21*35
=(1+2+7)*(1*3*5)
=10*1*3*5
=150
1*2*3+2*4*6+7*14*21
= 1*2*3+2*2*2*(1*2*3)+7*7*7*(1*2*3)
=1*2*3*(1+8+343)
=6*352
=2112
(2)1*3*5+2*6*10+7*21*35
=1*3*5+2*2*2*(1*3*5)+7*7*7*(1*3*5)
=1*3*5*(1+8+343)
=15*352
=5280
(2)(3)(4) help.help.help.
(1)(2)(3)求助,help me!
Help!Help!Help!Help!设数列{an}和{bn}满足:a1=b1=6,a2=b2=4,a3=b3=3且数列{an-1 -an}是等差数列(n是正整数)数列{bn -2)是等比数列(n是正整数)(1)求{an},{bn}的通项公式;(2)是否存在
(125/27)-2/3的次方help
1)Help with each other是英式用法还是美式用法?2)是help each other 还是help with each other
急,help help help已知线段AB=14cm,点D,C在线段AB上,DC=1cm,AC:DB=3:2,求线段BC,AD的长.
函数y=2的x-1次方 再加3的图像经过 help
Help!(1)
Help!(2)
May I help you?发音(1)“May I help you?” 发音(2)“You first,please.”发音
we must help them more than our parents_us(1)gave(2)give(3)helped(4)help大哥们,准确率糕点!
it's very kind of you ____ me.1 to help 2 helping 3 help 4 helped
help!help!help!help!(1) 取一瓶空气和一瓶呼出的气体,将燃烧着的小木条插入空气中______,燃烧着的小木条插入呼出的空气中______两者变化快的是____这说明_______.(2)取两块干燥的玻璃片,对其
help help已知A是实数,且使A^3+3A^2+3A+2=0求(A+1)^1996+(A+1)^1997+(A+1)^1998的值
help!要简算的.(1)1*2*3+2*4*6+7*14*21 (2)1*3*5+2*10+7*21*35
英语翻译 急!急!急!求一份入团申请书,尽量不要太像抄的!谢谢各位了!中译英重点是“急!急!急!”这三个字我有如下考虑:1,Urgent! Urgent! Urgent!2,Urgent! Please help!3,Help! Help! Help!哪个好?其他部分
英语翻译1、妈妈帮助我摆脱了困境(help sb out帮助某人摆脱困境)2、这本书真有趣,我情不自禁的笑了(can't help doing 情不自禁做某事)3、别客气,多吃点(help oneself不客气,随意)
不定积分分子是dx分母是(x+1)(x-2)求解.help...help