(24+( ))x(( )/18/( ))=1
x(x-1)=18
计算1/[x(x+3)]+1/[(x+3)(x+6)]+.+1/[(x+15)(x+18)]=?
30X-2X=84 5.8X-X=60 6.6X-5X=8 4X-X=24 1.5X-X=1
4x²-45=31x -3x²+22x-24=0 (x+18)(x+1)=-12
1/x(x+3)+1/(x+3)(x+6)+1/(x+6)(x+9)=3/2x+18
(24+( ))x(( )/18/( ))=1
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
(x-3)(x-2)+18=(x+9)(x+1),X是多少啊?
解方程x(x-1)(x-2)(x-3)(x-4)=24
x/12+3x/18+6x/24=1 怎么解
X^3-7X^2+18X-24=0
24:x=36:18,x=?