Question

Marvin was completing the square, and his work is shown below. Identify the line where he made his mistake.f(x) = 2x^2 − 8x + 5Line 1: f(x) = 2(x^2 − 8x) + 5 Line 2: f(x) = 2x^2 − 8x + 16) + 5 − 32 Line 3: f(x) = 2(x − 4)^2 − 27