Question

Simplify the expression

Answer 1

Anything to the power 0 is equal to 1. This is laws of indices.
So everything that is (inside the bracket) is equal to 1.
1 - 8 ÷ -7

Answer 2

if you see something in parentheses like this (4) to the zeroth power, then it equals 1. so, -7 is the answer because 1 - 8 is -7