2+2/3=2 2×2/3,3+3/8=3 2×3/8,4+4/15=4 2×4/15,…若10+a/b=10 2×a/
3a^2b-{2a^2b+[9a^b-(6a^2b+4a^2)]-(3a^2b-8a^2)}=
如果a-2b/a+2b=3,求a+2b/a-2b+3a-6b/4a+8b
(a-2b)/(a+2b)=3,求(a+2b)/(a-2b)+(3a-6b)/(4a+8b)的解,
对任意自然数a、b,规定a*b=2×a+b.若有:a*2a*3a*4a*5a*6a*7a*8a*9a=2026,则a的值
(2a+b)(2a-b)-3a(4a-3b)+(4a-b)(2a-b) a=5分之3,b=3分之2
(2a+b)(2a-b)+3(2a-b)²+(-3(4a-3b)+3a-b)(2a-b)其中a=-1
已知a=11,b=1/11,代数式a+2a+3a+4a+.+9a+10a+10b+9b+8b+.+3b+2b+b的值是
若a-b/a+b=4 则代数式2a﹣2b/a+b-4a+4b/3a-3b=
若2a²+3a+b=4,求{(a+b)(a-b)+(a-b)²+4a²(a+1)}/a的值
a-2b/a+2b=3,求2+2b/a-2b+3a-6b/4a+8b的值
[(4a+3b)(4a-3b)-(3a=3b)(2a-3b)]/5a 化简
已知A=4a²-3a,B=2a²+a-1,求A-2(A-B)