[(2a-1)(2a+1)+(a+2)(a-2)-4a^2](a^2+5)
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[(2a-1)(2a+1)+(a+2)(a-2)-4a^2](a^2+5)[(2a-1)(2a+1)+(a+2)(a-2)-4a^2](a^2+5)[(2a-1)(2a+1)+(a+2)(a-2)-4
[(2a-1)(2a+1)+(a+2)(a-2)-4a^2](a^2+5)
[(2a-1)(2a+1)+(a+2)(a-2)-4a^2](a^2+5)
[(2a-1)(2a+1)+(a+2)(a-2)-4a^2](a^2+5)
a^4-25
(a 1)(a 2)(a 3)(a
(a+2)(a+1)-a(a-3)
a-1/a+2
1-a/-2-a
-2×a×1/a
计算:[a-(1/a)]/a^2-2a+1/a
a(a-1)(a-2)(a-3)(a-4)因式分解
【1】a+a=a×a a= [ ]【2】a×a=a÷a a=[ ]【3】a×a=a-a a=[ ] [4]a-a=a+a a=[ ]
(通分) a/a^a^a+3a+2 ,a/a^a+2a+1 ,-1/3a+6
(a-a/a+1)/(a*a-2a)*(a+1)/(a*a+3a+2)要详细的计算说明!
计算[(a-1)/a*a-4*a+4]-[(a+2)/(a*a-2*a*a)]-4/a
a+a+1+a+2+a+3+a+4+a+5+a+6+a+7.+a+2013+a+2014=?
幂的计算题1、a×a^2×a^3×a^4×a^52、a+2a+3a+4a+a×a^2×a^3×a^4
[a/(a-1)+a/(a+2)](a+2)/(2a平方+3a+1)化简
a/a^2-4 a-1/a-2 a+2/a^2-4a+4
[(a/a-2)-(a/a+2)]÷4a/2-a,其中a=-1/2
a-2/a²-1×a³+2a²+a/a²-2a
[a^2-4/(a-3)(a+2)+(a+2)/a-3]除以a+1/a-3