Answer:
-7
Step-by-step explanation:
Product of the roots: c/a = -7/1 = -7
checking:
x² - 6x - 7 = 0
(x - 7)(x + 1) = 0
x - 7 = 0
x = 7
x + 1 = 0
x = -1
7(-1) = -7