Respuesta :
Line 1: f(x) = 2(x −8x) + 5 because 2 wasn't correctly factored out.
What it should say is:
f(x) = 2(x2 − 4x + 4) + 5 - 8
What it should say is:
f(x) = 2(x2 − 4x + 4) + 5 - 8