Final answer:
When dividing the exponent by 4 and getting a remainder of 3, the answer is positive 1.
Step-by-step explanation:
The strategy for the powers of I says that when you divide the exponent by 4 and get a remainder of 3, the answer is positive 1.
For example, if the exponent is 7, when divided by 4 we get a remainder of 3. Therefore, the answer is 1.
Similarly, if the exponent is 11, when divided by 4 we also get a remainder of 3. Again, the answer is 1.