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In Exercises 77-80, determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. 77. Some irrational numbers are not complex numbers. 78. (3 + 7i)(3 – 7i) i 7 + 3i _ 7 s an imaginary number. 79. 5 + 3i 80. In the complex number system, x² + y? (the sum of two squares) can be factored as (x + yi)(x – yi).

In Exercises 77-80, determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. 77. Some irrational numbers are not complex numbers. 78. (3 + 7i)(3 – 7i) i 7 + 3i _ 7 s an imaginary number. 79. 5 + 3i 80. In the complex number system, x² + y? (the sum of two squares) can be factored as (x + yi)(x – yi).

Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter4: Complex Numbers
Section: Chapter Questions
Problem 7T
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In Exercises 77-80, determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. 77. Some irrational numbers are not complex numbers. 78. (3 + 7i)(3 – 7i) i 7 + 3i _ 7 s an imaginary number. 79. 5 + 3i 80. In the complex number system, x² + y? (the sum of two squares) can be factored as (x + yi)(x – yi).
Transcribed Image Text:In Exercises 77-80, determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement. 77. Some irrational numbers are not complex numbers. 78. (3 + 7i)(3 – 7i) i 7 + 3i _ 7 s an imaginary number. 79. 5 + 3i 80. In the complex number system, x² + y? (the sum of two squares) can be factored as (x + yi)(x – yi).
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