What do you need to know to simplify an imaginary number to a higher power

What is the value of i to the power of 3?

• 1

• -1

• -i

• i

What happens to the powers of the imaginary unit 'i' after the fourth power?

• They become zero

• They become undefined

• They start repeating

• They double in value

How can you simplify i to the power of 7?

• Divide 7 by 4 and use the remainder as the new power

• Multiply 7 by 4 and use the result as the new power

• Subtract 4 from 7 and use the result as the new power

• Add 4 to 7 and use the result as the new power

What is the remainder when dividing 9 by 4?

• 0

• 3

• 1

• 2

Which of the following is essential for simplifying complex numbers?

• Understanding trigonometry

• Memorizing all prime numbers

• Knowing the rules of exponents

• Understanding calculus