The only solution of the equation x2 bx 16 = 0 is x = 4. what is the value of b? b = –16 b = –8 b = 8 b = 16

If you would like to find the value of b, you can do this using the following steps:

x^2 + bx + 16 = 0
x = 4

4^2 + 4 * b + 16 = 0
16 + 4 * b + 16 = 0
4 * b = - 32    /4
b = - 32/4
b = - 8

The correct result would be b = - 8.