Question

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

Answer 1

`-3=-(b)/(2a)\\ -3=-(m)/(2)\\ -6=-m\\ m=6`

C