化简(3a^2-1/2a+5)-(a^2+3/2a-1)-(-5/2a^2-6)
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化简(3a^2-1/2a+5)-(a^2+3/2a-1)-(-5/2a^2-6)化简(3a^2-1/2a+5)-(a^2+3/2a-1)-(-5/2a^2-6)化简(3a^2-1/2a+5)-(a^2
化简(3a^2-1/2a+5)-(a^2+3/2a-1)-(-5/2a^2-6)
化简(3a^2-1/2a+5)-(a^2+3/2a-1)-(-5/2a^2-6)
化简(3a^2-1/2a+5)-(a^2+3/2a-1)-(-5/2a^2-6)
(3a^2-1/2a+5)-(a^2+3/2a-1)-(-5/2a^2-6) => 3a^2-0.5a+5 -a^2-1.5a+1 +2.5a^2+6 => 4.5a^2-2a+12
化简; a-2a+3a-4a+5a-6a+``````-2006a+2007a.
化简：a-2a+3a-4a+5a-6a+.+2010a+2011a.
化简 3a-[5a-(a+2)+a]-1
化简：a(a*a-1)+2a*a(a+1)-3a(2a-5)拜托了各位
a+a+1+a+2+a+3+a+4+a+5+a+6+a+7.+a+2013+a+2014=?
化简(a+ 3)(a-3) (a-5)(a+7)-2a(a-1)
[a/(a-1)+a/(a+2)](a+2)/(2a平方+3a+1)化简
(a 1)(a 2)(a 3)(a
(a+2)(a+1)-a(a-3)
a=-1 求a-2a+3a-4a+5a-6a+...+99a-100a
化简(a+1)(a-2)/(a+2)(a-2)+3
a-2a+3a-4a+5a-6a+...+99a-100a
(a+3a+5a+...+2009a)-(2a+4a+6a+...+2008a)=
(a+3a+5a+.+2009a)-(2a+4a+6a+.2008a)
计算（a+3a+5a+...+2009a)-(2a+4a+6a+...+2010a)
(a+3a+5a+...+2013a)-(2a+4a+6a+...+2012a)=
计算(a+3a+5a+.+2003a)-(2a+4a+6a+...+2004a)
(a+3a+5a+.+2003a)-(2a+4a+6a+.+2004a)