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(x - 8x) + 5
Line 2: f(x) = 2(x - 8x + 16) + 5 - 16
Line 3: f(x) = 3(x - 4)2 - 11

Answer 1

Or he did not make a mistake. I think that it is line 1 because it is suppose to be x^2

Answer 2

what do you guys think?

Answer 3

acacia sux #swag