(\(x-1,25\))(\(x-8\)) = 0
\(\left[{}\begin{matrix}x-1,25=0\\x-8=0\end{matrix}\right.\)
\(\left[{}\begin{matrix}x=1,25\\x=8\end{matrix}\right.\)
Vậy \(x\) \(\in\) { 1,25; 8}
Ta có : x - 1,25 = 0 hoặc x - 8 = 0
x = 0 + 1,25 x = 0 + 8
x = 1,25 x = 8
Vậy : x = 1,25 hoặc x = 8