Operations with Complex Numbers

When adding two complex numbers, which parts do you combine separately?

• Only real parts

• Real parts and imaginary parts

• Only imaginary parts

• Neither real nor imaginary parts

What is the result of adding 7 - 3i and 4 + 5i?

• 3 + 2i

• 11 + 2i

• 3 - 2i

• 11 - 2i

How do you handle the imaginary parts when subtracting two complex numbers?

• Add them

• Multiply them

• Divide them

• Subtract them

What is the result of subtracting 2 - i from 8 + 3i?

• 6 - 4i

• 10 + 2i

• 6 + 4i

• 10 - 2i

When multiplying complex numbers, what method is used?

• FOIL method

• Addition and subtraction

• Cross multiplication

• Direct multiplication

What is the result of multiplying 2 + 3i and 5 - i?

• 10 - 15i

• 13 + 13i

• 10 + 15i

• 13 - 13i

What is the value of i squared?

• i

• -1

• 1

• -i

What is the result of squaring the complex number 1/2 + √3/2i?

• -1/2 + √3/2i

• 1/2 + √3/2i

• 1/4 + √3/4i

• -1/4 + √3/4i

What happens to the middle terms when multiplying (1/2 + √3/2i) by itself?

• They remain unchanged

• They add up

• They multiply

• They cancel out

What is the final result of cubing the complex number 1/2 + √3/2i?

• 2

• 0

• -1

• 1