Question

Tìm x biết:  x(x - 2) - 3x + 6 = 0

Answer 1

x(x-2)-3x+6=0

<=>x(x-2)-3(x-2)=0

<=>(x-2)(x-3)=0

<=>*x-2=0                *x-3=0

         x=2                      x=3

      

Answer 2

\(x(x-2)-3x+6=0\)

\(<=>x(x-2)-3(x-2)=0\)

\(<=>(x-2)(x-3)=0\)

\(<=>\) \(\left[{}\begin{matrix}x-2=0\\x-3=0\end{matrix}\right.< =>\left[{}\begin{matrix}x=2\\x=3\end{matrix}\right.\)