Imaginary Numbers

What is the result of multiplying (3i) by (5i)?

• -15

• 8

• 20

• -12

Simplify the expression: (4i) - (2i)

• 8i

• 6i

• 10i

• 2i

Calculate the value of (2i)^2

• 2

• -4

• 4

• 0

Find the conjugate of the imaginary number 6i

• i

• -6i

• 6

• 0

Determine the conjugate of the complex number (3 + 4i)

• 7 - 2i

• 3 - 4i

• 3 + 4i

• 2 - 5i

What is the conjugate of the imaginary number -8i?

• -8i

• 8i

• 0

• 4i

Solve the equation: 3x + 2i = 5i

• 3x = 2i

• 3x = 3i

• x = i

• 3x = 5i

Find the solution to the equation: 2x - 3i = 7

• x = 3.5 + 1.5i

• x = 2 + 3i

• x = 5 - 2i

• x = 4 - 1i

Perform the following complex number arithmetic: (2 + 3i) + (4 - 5i)

• 5 - 8i

• 7 - 3i

• 3 + 2i

• 6 - 2i

Calculate the result of the complex number arithmetic: (5 - 2i) * (3 + 4i)

• 9 - 6i

• 11 + 2i

• 15 - 8i

• 22 + 7i