3,2,11,14,27,( ) A.30 B.32 C.34 D.36 请写明解题过程,感激不尽
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x)31141412yCN{
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(通分) a/a^a^a+3a+2 ,a/a^a+2a+1 ,-1/3a+6
a-2a+3a-4a+5a-6a+7a-8a+9a-10a+11a.+99a-100a=
5a-【a+(5a-2a)-2(a-3a)-4a】
已知:a+2a+3a+4a+.+10a=5.5那么:a=( )在数列2,5,11,a,47,...中,a=( )
(a+2)(a-3)+14=a*a解方程
约分:(3a-2a)(3-2a-a)/(a+a)(2a-5a+3)
合并同类项:a-2a-3a+4a+5a-6a-7a+8a+9a-10a-11a+12a+……+2008a+2009a-2010a-2011a
(27a^3-15a^2+6a)除以(-3a)=
逻辑运算中A表示什么 (1) 0 · A = 0 (10) 1' = 0; 0' = 1 (2) 1 · A = A (11) 1 + A = 1 (3) A · A = A (12) 0 + A = A (4) A · A' = 0 (13) A + A = A (5) A · B = B · A (14) A + A' = 1 (6) A·(B·C) = (A·B)·C (15) A
计算:(a+3a+5a+...+2013a)-(2a+4a+6a+...+2012a)=?
3a平方+a平方-(2a平方-2a)+(3a-a平方)
计算(a+3a+5a+.+2003a)-(2a+4a+6a+.+2004a)
计算(a^2+a+1)/(a+1)-(a^2-3a+1)/(a-3)
a-2a+3a-4a+.+99a-100a的值为( )
1=5a,2=8a,3=11a,4=14a,n=?a
计算(3a×a)+(2a×3a)+(3a×a)+[a×(a+2a+2a+2a+a)]
逻辑运算中的A表示什么 (1) 0 · A = 0 (10) 1' = 0; 0' = 1 (2) 1 · A = A (11) 1 + A = 1 (3) A · A = A (12) 0 + A = A (4) A · A' = 0 (13) A + A = A (5) A · B = B · A (14) A + A' = 1 (6) A·(B·C) = (A·B)·C (15
a-2a-3a+4a+5a-6a-7a+8a+9a-10a-11a.+2008a+2009a-2010a-2011a如何合并同类项?