Question

what value of c makes $x^2 + 6x + c$ a perfect square trinomial? 6 3 9 12

Explanation:

Step1: Identify linear term coefficient

The linear term is $6x$, so its coefficient is $6$.

Step2: Half the coefficient

$\frac{6}{2}=3$

Step3: Square the result

$3^2=9$

Answer:

9