jika diketahui f(x)=x-3 dan g(x)=x^2+5.jika (fog)(x)=(gof)(x),tentukanlah nilai x

(fog) (x) = (gof) (x)
(x²+5)-3=(x-3)²+5
x²+2= x² - 6x +9 +5
x²-x² +6x +2-14=0
6x -12=0
6x =12
x = 2