化简:2(3a-5)+5
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化简:2(3a-5)+5化简:2(3a-5)+5化简:2(3a-5)+52(3a-5)+5=6a-10+5=6a-52(3a-5)+5=6a-10+5=6a-5
化简:2(3a-5)+5
化简:2(3a-5)+5
化简:2(3a-5)+5
2(3a-5)+5
=6a-10+5
=6a-5
2(3a-5)+5
=6a-10+5
=6a-5
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5a^2-[a^2+(5a^2-2a)-2(a^2-3a)]
化简:5a²-【a²+(5a²-2a)-2(a²-3a)】
化简5a²+[a²+(5a²-2a)-2(a²-3a)]
a^2-16/a^2-2a-3 *a-3/a^2-5a+4 化简
化简 a-2a+3a-4a+5a'''''''+99a-100a a=-2 的值
化简:a(a*a-1)+2a*a(a+1)-3a(2a-5)拜托了各位
化简a-2a+3a-4a+5a-6a…+99a-100a
化简 {[5a^4(a-2)-(-a)^2*(-a)^2]/(-a)^3}/(0.5a)
化简(a+ 3)(a-3) (a-5)(a+7)-2a(a-1)
化简a+2a-3a-4q+5a+6a-7a-8a+...2001a+2002a-2003a-2004a
化简(—a^3+3a^2-7a+5)+(5a^-6a)-(a^3-4a+7)
化简(—a^3+3a^2-7a+5)+(5a^-6a)-(a^3-4a+7)
a-2a+3a-4a+5a-6a+...+99a-100a
(a+3a+5a+...+2009a)-(2a+4a+6a+...+2008a)=
(a+3a+5a+.+2009a)-(2a+4a+6a+.2008a)