(3a-4b-5)(3a+4b+5)?.我快弄糊涂了!
a除尽b ,a整除b,a被b除尽,a被b整除,谁能帮我弄清这几句话的意思,我都糊涂了.
(3a-6b)/(a+b) - (5a-6b)/(a-b) - (4a-5b)/(a+b) - (7a-8b)/(a-b
(3a-6b/a+b)-(5a-6b/a-b)-(4a-5b/a+b)-(7a-8b/b-a)
计算,快(2a-b)(4a^2+b^2+2ab)-a(3a-b)(3a+b)
0 a a+b 2a+b 2a+2b 3a+2b 3a+3b 4a+3b 4a+4b 5a+4b 5a+5b …… 求一
(2a+b)(2a-b)-3a(4a-3b)+(4a-b)(2a-b) a=5分之3,b=3分之2
化简下列二次根式:根号a^3(a-b)^3,根号(a-b)^5(a+b)^4,根号(a-b)/(a+b),且a>b>0.
小学数学报六年级5a=33b {a,b不等于0} 则a:b={ }:{ }明天就交了,要快,我急死了!!!!!!!!!!
2A的2次方-3A[2A-5B]-4B[5A-B]
[(4a+3b)(4a-3b)-(3a=3b)(2a-3b)]/5a 化简
怎样化简 [(3a+2b)(3a-2b)-(a+2b)(5a-2b)]/4a
(a-2b)(a^2-2ab+4b^2)-a(a-5b)(a+3b)