Answer:
Zeros are x = 2 and x = -8
Explanation:
Zeros of an expression are the x values which make the expression = 0
Factor x² + 6x -16 as follows
(x -2)(x+8)
If we set x² + 6x -16 =0
that would be equivalent to setting
(x -2)(x+8) = 0
Two solutions.
Either x - 2 ==> x = 2
or x + 8 = 0 ==> x = -8