Answer:
The first blank is + and the second blank is 1.
Hope this helps!
Explanation:
When multiplying two numbers that both have powers, whatever numbers those powers are, they add together. For the question, one power was -3 and the other was 4, which equals -3 + 4 = 1. In division, the powers subtract, the power number on top of the fraction minus the power number on the bottom. If there is no power number given, the power number will be 1.