Question

(gof)(x) = 2x²+4x+5 dan g(x)= 2x+3 maka f(x)

Answer 1

(gof) (x) = 2x² + 4x + 5
g(f(x)) = 2 . f(x) + 3
2•f(x) + 3 = 2x² + 4x + 5
2•f(x) = 2x² + 4x + 5 - 3
2•f(x) = 2x² + 4x + 2
f(x) = (2x² + 4x + 2)/2
f(x) = x² + 2x + 1
............................

Answer 2

2fx + 3 = 2x^2 +4x +5
2fx = 2x^2 +4x +2
fx = x^2 +2× + 1

uji coba apakah benar??

2(x^2 + 2x + 1) +3 = 2x^2 +4x +5
2x^2 + 4x + 5

ternyata sama maka jawabannya benar
jangan lupa jawaban terbaik ya :)