Chapter 5 Complex Numbers

Which of the following statements is true?

• A. Every real number is a complex number with an imaginary part of -1.

• B. Every real number is a complex number with an imaginary part of 0.

• C. Every real number is a complex number with an imaginary part of 1.

• D. Every complex number is a real number with an imaginary part of 1.

What is (8 - 18i) - (3 - 13i)?

• 5 - 31i

• 5 - 5i

• 11 - 31i

• 11 - 5i

• -272 - 177i

• -264 - 175i

• 272 - 177i

• 264 - 175i

What is (2 - 9i) \div (-4 + 6i)?

• i

Which expression is equivalent to (9 + √−49) + (7 − √−81)?

• 16 − 2i

• 7 + 7i

• 16 + 16i

• 7 + 16i

What is the sum of (17 − √−3) and (6 + √−36)?

• A. 23 + 9i

• B. 11 + (6 − √3)i

• C. 11 + 9i

• D. 23 + (6 − √3)i

What is the product of (5 − √−6) and (9 + √−100)?

• 45 − 10√6 + (50 − 9√6)i

• 10√6 + 45 + (50 + 9√6)i

• 45 − 10√6 + (50 + 9√6)i

• 10√6 + 45 + (50 − 9√6)i