化简6a+13a 6x-28-2.5x+30.5 8a-(5a+8) 5x+7-(4
化简6a+13a 6x-28-2.5x+30.5 8a-(5a+8) 5x+7-(4
化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
方程(a+6)x2 +3x−8
已知x=5是一元一次方程3x-2a=7的解,则a=( &nbs
(x+2)平方-(x-1)(x+1) 2. 3(-a+
化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
If x is a prime number,y is&nb
因式分解:(1)8a-4a2+32 &
麻烦解释一下其中a x.a都是什么意思
6A+12A化简6X-28-2.5X+30.5化简8A-(5A+8)化简(5x+7)-(4X+0.18)
求解一道集合题8.设A、B是非空数集,定义A*B={x|x∈A∪B且 &n