Complex Numbers Quiz

Simplify the expression (3 + 2i) + (4 - 5i).

• 7 - 3i

• 3 + 7i

• 7 + 3i

• -1 - 3i

Perform the operation (2 - 3i) * (1 + 4i).

• -6 - 5i

• 14 + 5i

• -2 + 7i

• 8 - 3i

Find the conjugate of the complex number 5 + 7i.

• 5 + 7i

• 5 - 7i

• 5 + 7

• 7 - 5i

Solve the quadratic equation x^2 + 4x + 4 = 0 to find the complex roots.

• -2

• 3

• -1

• 5

Find the square root of the complex number -9 + 12i.

• 3-2i

• 3+2i

• 3+2i or -3-2i

• -3+2i

Divide the complex numbers (6 + 8i) / (3 - 4i).

• 1 + 2i

• 2 + i

• -1 + 2i

• 2 - i

Calculate the product of the complex numbers (4 - 3i) * (2 + 5i).

• 23 + 14i

• 23 - 14i

• -23 + 14i

• -23 - 14i

Find the absolute value of the complex number 3 - 4i.

• 5

• 7

• 9

• 11

Multiply the complex numbers (1 + 2i) * (3 - 4i).

• 11 + 2i

• 5 + 10i

• 11 - 2i

• 5 - 10i

Find the reciprocal of the complex number 2 - 3i.

• 2/13 + 3/13i

• 1/2 - 1/3i

• 1/5 + 3/5i

• 2/5 - 3/5i