jika g(x)=x²+2ax+2 dan g(3)=23,maka nilai a=... A.2 B.4 c.6 d.8 e.12 pakai caranya

[tex]g(x) = x {}^{2} + 2ax + 2 \\ g(3) = 23 \\ \\ g(3) = 23 \\ (3) {}^{2} + 2a(3) + 2 = 23 \\ 9 + 6a + 2 = 23 \\ 6a = 23 - 9 - 2 \\ 6a = 12 \\ a = 6[/tex]