Mastering Complex Number Operations

What is the sum of 5 + 4i and 7 + 2i?

• 10 + 6i

• 12 + 6i

• 10 + 8i

• 12 + 8i

What is the standard form of a complex number?

• a + b

• a - bi

• a + bi

• a - b

What is the result of 3 - 4i + 5 + 6i?

• 8 + 2i

• 2 + 10i

• 2 + 2i

• 8 + 10i

What is the result of 3 - 8i minus 4 - 2i?

• 1 + 6i

• 1 - 6i

• -1 + 6i

• -1 - 6i

What should you do first when subtracting complex numbers?

• Combine like terms

• Distribute the negative sign

• Add the imaginary parts

• Add the real parts

What is the product of 4 and 2 + 3i?

• 8 + 3i

• 8 + 9i

• 8 + 6i

• 8 + 12i

What is the product of -5 and 6 - 3i?

• -30 + 15i

• 30 - 15i

• 30 + 15i

• -30 - 15i

What is the result of combining 8 and -30?

• -38

• 38

• 22

• -22

What is the result of combining 12i and 15i?

• 27i

• -27i

• -3i

• 3i

What is the final result of 4(2 + 3i) - 5(6 - 3i)?

• -22 + 27i

• 22 - 27i

• -22 - 27i

• 22 + 27i