(a^4/3-8a^1/3b)/(4b^2/3+2√ab+a^2/3)/(1-2*√a/b)*√a
计算(a^3-4a^2b-a+4ab^2)/a(a-2b+1)
分解因式(a+1)(a+3)(a+5)(a+7)+15(2a+b)(4a^2-2ab+b^2)-b(2a-b)^2a^3
(a-2b)(a^2+2ab+4b^2)-a(a+3b)(a-3b),其中a=-1/9,b=1
先化简再求值 (a-2b)(a²+2ab+4b²)-a(a-5b)(a+3b),其中a=-1,b=2
(3a+b)(3a-b) (-1/2a-b) (3y+2x)^2 (3ab+2b)^2 -8a^4b^/6ab^2 (3
已知实数a,b满足ab=-1/5,a+b=4/5,求a^2b+ab^2-a^3b^2-a^2b^3
已知a-b=4,ab=-1,求(-2ab+2a+3b)-(a-4b+b)
....(1) (a-b)/((√2√ab)-a-b) 化简 (2) (a-2)x+(3a-1)y=2a 4x-2(a-
已知ab≠0,且实数a、b满足√a(√a+√b)=3√b(2/3√a+4√b),那么(a-5b+√ab)/(a+b+√a
计算(3a-2b)(9a*a+6ab+4b*b)-(3a+2b)(9a*a-6ab+4b*b)
先化简,再求值:[a/(a+b)-b/(b-a)-2ab/(a^2-b^2)]/(1/a-1/b),其中a+b=3,ab
因式分解a^+b^+2a^b+2ab^+a^+b^+3ab+a+b