化简:(3a-2a^2)-[5a-1/3(6a^2-9a)-4a^2].去括号化简!
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化简:(3a-2a^2)-[5a-1/3(6a^2-9a)-4a^2].去括号化简!
化简:(3a-2a^2)-[5a-1/3(6a^2-9a)-4a^2].
去括号化简!
化简:(3a-2a^2)-[5a-1/3(6a^2-9a)-4a^2].去括号化简!
解
(3a-2a²)-[5a-1/3(6a²-9a)-4a²]
=3a-2a²-[5a-2a²+3a-4a²]
=3a-2a²-(8a-6a²)
=3a-2a²-8a+6a²
=(6a²-2a²)+(3a-8a)
=4a²-5a
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
(通分) a/a^a^a+3a+2 ,a/a^a+2a+1 ,-1/3a+6
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)
化简:3a-[5a-(2a-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)
5a-【a+(5a-2a)-2(a-3a)-4a】
求和:1,a+a^2,a^3+a^4+a^5,a^6+a^7+a^8+a^9,···(a不等于0)
a=-1 求a-2a+3a-4a+5a-6a+...+99a-100a
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)
化简(a+1)(a-2)/(a+2)(a-2)+3
化简:a^2+3a+2/a^2+6a+5=()/a+5