Mathematics

# In the equation x^2 + mx + n = 0, m and n are integers. The only possible value for x is –3. What is the value of m ? A. 3 B. –3 C. 6 D. –6 E. 9

$-3=-\frac{b}{2a}\\ -3=-\frac{m}{2}\\ -6=-m\\ m=6$