F(x) =√×+1,g(x) =x2-2,dan h(x) =√1-2× tentukan nilai x jika diketahui (f°g°h) (x) =2

fogoh(x) = f(g(h(x))) = f(g(√(1-2x))) = f((√(1-2x)^2 - 2)
= f(1 - 2x - 2)
= f(-2x - 1)
= √(-2x - 1 + 1)
fogoh(x) = √(-2x)
fogoh(x) = 2 --> √(-2x) = 2, kuadratkan
-2x = 4
x = -2