化简 5(1+10%)a-5a
化简 5(1+10%)a-5a
化简(a-5)(a+1)/a的平方-5a除以(a的平方+a)
1+2a+3a^2+4a^3+5a^4+6a^5+5a^6+4a^7+3a^82a^9+a^10
化简; a-2a+3a-4a+5a-6a+``````-2006a+2007a.
化简:3a-[5a-(2a-1)]=
化简:(3a-2a^2)-[5a-1/3(6a^2-9a)-4a^2].
化简 3(-3a^2-2a)-[a^2-2(5a-4a^2+1)-3a]
当a=1/2+根号5时,化简9-6a+a^2/a-3加(根号下a^2-2a+1)/a^2-a
化简:|a-2|-|5-a|
23-a-{10a-[(5a-15)-(4-6a)]}
(a+8)(a-8)-(a+3)(a+5)=1
(a+1)(a+3)(a+5)(a+7)+15