Question

Fungsi f:x® 2k+x².Jika f(2)=12 ,

Answer 1

F(x) = 2k + x^2
f(2) = 12
2k + (12)^2 = 12
2k = 12-144
2k = -132
k = -66

f(30k) = 2k + (30k)^2
= 2(-66) + (900×66^2)
=..... ???
kok nggak ada di pilihan ya??
apa ada yg salah?