Tolong bantu jawab + Caranya f(x) = x-1 g(x) = x² + 2x - 3 GoF(x) =

f(x) = x - 1
g(x) = x² + 2x - 3

(gof)(x)
= (x - 1)² + 2(x - 1) - 3
= x² - 2x + 1 + 2x - 2 - 3
= x² - 4

gof=(x-1)²+2(x-1)-3
=(x-1)(x-1)+2x-2-3
=x²-x-x+1+2x-2-3
=x²-2x+2x+1-2-3
=x²-4