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
Complex Numbers
1:02 minutes
Problem 6
Textbook Question
Textbook QuestionDecide whether each statement is true or false. If false, correct the right side of the equation. √-25 = 5i
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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. In this context, the expression √-25 can be rewritten as √(25) * √(-1) = 5i.
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Square Roots of Negative Numbers
The square root of a negative number is not defined within the set of real numbers, but it can be expressed using imaginary numbers. For example, √-x can be expressed as i√x, allowing for the extension of the number system to include complex numbers, which is essential for solving equations involving negative square roots.
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True or False Statements in Mathematics
In mathematics, determining the truth value of a statement involves verifying whether the statement holds under the defined operations and properties. In this case, the statement √-25 = 5i is true, as both sides represent the same complex number, illustrating the importance of understanding the properties of square roots and complex numbers.
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