Toán Lớp 8: Tìm $\textit{x:}$ $x^{2}$ – $\textit{5}$$\textit{x}$ + $\text{6 = 0}$
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Toán Lớp 8: Tìm $\textit{x:}$ $x^{2}$ – $\textit{5}$$\textit{x}$ + $\text{6 = 0}$
Comments ( 2 )
$\text{<=>$x^{2}$ – 2x – 3x + 6 = 0}$
$\text{<=>($x^{2}$ – 2x) – (3x – 6) = 0}$
$\text{<=>x – 2 = 0 => x = 2}$
$\text{<=>x – 3 = 0 =>x = 3}$
$\text{Vậy $\left[\begin{matrix} x = 2\\ x = 3\end{matrix}\right.$ }$