Question

X^2+12x+c what does c = this is completing the square and need the answer

Answer 1

$\text{If the quadratic equation is a perfect square, then}\\\\~~~~~\text{Discriminant} = 0\\\\\implies 12^2 - 4 \cdot 1 \cdot c = 0 \\\\\implies 144 -4c =0\\\\\implies 4c = 144\\\\\implies c = \dfrac{144}4\\\\\implies c = 36$

Answer 2

X=12 and c=20 hope that helps please give Brainliest if it does