Tolong dibantu buat besok

Matriks
Kelas X

[tex] A = \left(\begin{array}{cc}2 & 3 \\ 4 & x \end{array}\right) [/tex]

A singular , maka
[tex] \left|\begin{array}{cc}2 & 3 \\ 4 & x \end{array}\right| [/tex] = 0
2x - 12 = 0
2x = 12
x = 6