A²+(5A²-2)化简!
5a²-(a²+(5a²-2a)-2(a²-3a))化简
化简:5a²-【a²+(5a²-2a)-2(a²-3a)】
化简:15a²-【5a-8a²-(2a²-a)+9a²】
化简:(2a+1/a²-1)*a²-2a+1/a²-a-(1/a+1)
(a-2分之5减去a-2)除以a²-4a+4分之(a-3) 化简
(2+1/a-1-1/a+1)÷(a-a/1-a²)化简
计算:5a²-[a²+(5a²-2a)-2(a²-3a)]
化简:3(2a²+5a²+2a-1)-4(3-8a+2a²-6a²)
化简(a²-6a+9分之a²+2a)除以(a²-3a分之a²-4)-(a-2分之
A²+(5A²-2)化简!
(a- 2a/a)÷1-a² / a²+a
7a²-(5a²-2b)+4a(2a²-3b)化简