Nilai x dari (2x+2 3x) (x) (1) =3 adalah..... (tentang matriks)

[tex] \left[\begin{array}{ccc}2x + 2&3x\end{array}\right] \left[\begin{array}{ccc}x\\1\end{array}\right] = 3 \\ \\ 2x^{2} + 2x + 3x = 3 \\ 2x^{2} + 5x - 3 = 0 \\ (2x-1)(x+3) = 0 \\ [/tex]

2x - 1 = 0 atau x + 3 = 0
2x = 1 atau x = -3
x = 1/2 atau x =-3