化简:(a^3b^5)^3/(3a^4b)^2
[(4a+3b)(4a-3b)-(3a=3b)(2a-3b)]/5a 化简
1.(a-b)^2(b-a)^3(a-b)^-4
化简:5(a-2b+c)-4(-a+b-c)+4(3a-2b)
化简 |a+b|-|3a-2b|
化简5(2a-2b)+4(2b-3a) 注意a b 是向量!
0 a a+b 2a+b 2a+2b 3a+2b 3a+3b 4a+3b 4a+4b 5a+4b 5a+5b …… 求一
(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)
(2a+b)(2a-b)-3a(4a-3b)+(4a-b)(2a-b) a=5分之3,b=3分之2
[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
规定一种新运算:a*b=a+b,a@b=a-b,其中a、b为有理数,化简a^2b*3ab+5a^2b@4ab,并求出当a