Question

Marvin was completing the square, and his work is shown below. Identify the line where he made his mistake. f(x) = 2x2 − 8x + 5 Line 1: f(x) = 2(x2 − 8x) + 5 Line 2: f(x) = 2(x2 − 8x + 16) + 5 − 32 Line 3: f(x) = 2(x − 4)2 − 27

Answer 1

Answer: the answer would be line 1

Explanation:

I took the test

Answer 2

Mistake in line one

He forgot to factor the 2 out of -8x