Complex Numbers Quiz

What is the result of adding (3 + 2i) and (1 - 4i)?

• 4 + 2i

• 2 - 2i

• 4 - 2i

• 5 - 6i

What is the result of subtracting (5 + 6i) from (8 - 3i)?

• 3 + 9i

• 11 - 9i

• 2 + 3i

• 13 - 9i

What is the product of (2 + 3i) and (4 - 5i)?

• 20 + 15i

• 23 + 2i

• 10 - 8i

• 12 - 7i

What is the product of (7 - 2i) and its conjugate?

• 5i

• 33

• 10i

• 14

What is the quotient of (9 + 4i) divided by (2 - 3i)?

• 5 - 7i

• 3.5 + 2.5i

• 1.6923076923076923 + 1.1538461538461537i

• 10 - 12i

What is the quotient of (6 - 5i) divided by its conjugate?

• 11i

• 30 - 25i

• 6 - 5i

• 1

Find the conjugate of the complex number (3 + 7i).

• 3 - 7i

• 3 + 7

• 7 - 3i

• 3 + 7i

Find the conjugate of the complex number (-2 - 4i).

• (-2 - 4i)

• (-2 + 4i)

• (-4 - 2i)

• (-2 + 4)

Solve the equation (2 + 3i)x = (4 - 5i) for x.

• x = (4 + 5i) / (2 + 3i)

• x = (4 - 5i) / (2 - 3i)

• x = (4 - 5i) / (2 + 3i)

• x = (4 + 5i) / (2 - 3i)

Solve the equation (5 - 2i)x + (3 + 4i) = (7 - 6i) for x.

• x = 4 - 3i

• x = 1 - i

• x = 3 - 2i

• x = 2 - i