Question

Just this one question

Answer 1

Hi there! The correct answer is the third.


`f(x) = 3 {x}^(2) + 12x + 11 \\ f(x) = 3( {x}^(2) + 4x) + 11 \\ f(x) = 3((x + 2) {}^(2) - {2}^(2) ) + 11 \\ f(x) = 3((x + 2) {}^(2) - 4) + 11 \\ f(x) = (x + 2) {}^(2) - 12 + 11 \\ f(x) = (x + 2) {}^(2) - 1`

~Hope this helps you!