4 fog ( x) = X²+4×+5g(x) = ×+ 1f ( x) ?​

Jawaban:

f(x) = x²+2x+2

Penjelasan dengan langkah-langkah:

(fog) (x) =x²+4x+5

g(x)=x+1

(fog) (x) =x²+4x+5

f(g(x))= x²+4x+5

f(x+1)=x²+4x+5

f(x)=(x-1)²+4(x-1)+5

f(x)=(x-1)(x-1)+4x-4+5

f(x)=x²-x-x+1+4x+1

f(x)=x²+2x+2