Answer:
-88
3 or 3^(-88)
Explanation:
Start with the "power" 2 - 6(7 + 8). "Order of operations rules" require us to do work inside the parentheses first: (7+8) = (15) = 15.
Then the "power" is 2 -6(15), or 2 - 90, or -88.
Apply this power to the base 3. We get:
-88 1
3 or 3^(-88) or -------------
3^88