Selesaikan Soal No.9 guys pakai Cara

f(x)= x^2 - x + 3
g(x) = 1-2x
(fog)(x)
= f(g(x))
= f(1-2x)
= (1-2x)^2 -(1-2x)+3
= 1 +4x+4x^2 -1+2x+3
=4x^2 +6x+3