Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
1. Equations & Inequalities
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1:31 minutes
Problem 7
Textbook Question
Textbook QuestionIn Exercises 1–8, add or subtract as indicated and write the result in standard form. 8i - (14 - 9i)
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Complex Numbers
Complex numbers are numbers that have a real part and an imaginary part, expressed in the form a + bi, where a is the real part and b is the coefficient of the imaginary unit i, which is defined as the square root of -1. Understanding complex numbers is essential for performing operations such as addition and subtraction.
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Standard Form of Complex Numbers
The standard form of a complex number is a + bi, where a and b are real numbers. When performing operations on complex numbers, the goal is to express the result in this standard form, which makes it easier to interpret and use in further calculations.
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Distributive Property
The distributive property states that a(b + c) = ab + ac, allowing us to multiply a single term by each term within parentheses. This property is crucial when simplifying expressions involving complex numbers, as it helps in correctly distributing negative signs and combining like terms.
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