方程式一問~~~~~~~~(請列出步驟)

(1+x)^2 = 13824 / 9600

(1+x) = 1.44^0.5
1+x = 1.2
x = 0.2

1+x^2=1.44
1+x=1.2
x=0.2

實在簡單

(1+x)^2 = 13824/9600
1+ x =+/- sqrt(13824/9600) =+/- sqrt(1.44) = +/- 1.2
x = 1.2 -1 = 0.2. And
x = -1.2 - 1 = -2.2.