buat soal remedial. plis bantu

f(x) = 2x - 3 , g(x) = x² + 1
• (f o g )(x) = f (g(x))
==> f (x² + 1)
==> 2(x² + 1) - 3
==>2x² + 2 - 3
==> 2x² - 1