计算:3a+4b/a-b+3b/b-a-4a/a-b
计算:3a+4b/a-b+3b/b-a-4a/a-b
计算:((a+b)(a-b)-(a-b)^2+2b(a-b))/4(a-b)
4(b-a)(a+b)-(2a-3b)(3a-2b)怎么计算
计算a+b/b-a-b/b
计算a^2-b^2/a+b-4a(a-b)+b^2/2a-b
3a/a-4b +a+b/4b-a -7b/a-4b
计算3a(2a-4b)-(3a+2b)(2a-3b)
1.(a-b)^2(b-a)^3(a-b)^-4
计算,快(2a-b)(4a^2+b^2+2ab)-a(3a-b)(3a+b)
(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(3a-2b)(9a*a+6ab+4b*b)-(3a+2b)(9a*a-6ab+4b*b)