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
0. Review of Algebra
Radical Expressions
0:48 minutes
Problem 36d
Textbook Question
Textbook QuestionFind each root. √(-12)²
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Square Root
The square root of a number is a value that, when multiplied by itself, gives the original number. In this case, the expression involves the square root of a negative number, which leads to complex numbers. The square root of a negative number can be expressed using the imaginary unit 'i', where i = √(-1).
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Complex Numbers
Complex numbers are numbers that have a real part and an imaginary part, typically expressed in the form a + bi, where 'a' is the real part and 'b' is the coefficient of the imaginary unit 'i'. Understanding complex numbers is essential when dealing with square roots of negative values, as they extend the number system to include solutions that are not found within the real numbers.
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Exponentiation
Exponentiation is a mathematical operation involving two numbers, the base and the exponent. In the expression (-12)², the base is -12 and the exponent is 2, indicating that -12 is multiplied by itself. This operation results in a positive number, as squaring any real number, whether positive or negative, yields a non-negative result.
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