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
Polynomials Intro
1:42 minutes
Problem 77c
Textbook Question
Textbook QuestionFind each product : (4x+5)(4x-5)
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Factoring and the Difference of Squares
The expression (4x+5)(4x-5) is an example of the difference of squares, which follows the formula a^2 - b^2 = (a+b)(a-b). Here, a is 4x and b is 5. Recognizing this pattern allows for quick simplification and understanding of how to multiply these binomials.
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04:36
Factor by Grouping
Binomial Multiplication
Binomial multiplication involves multiplying two binomials, which can be done using the distributive property or the FOIL method (First, Outside, Inside, Last). This method ensures that each term in the first binomial is multiplied by each term in the second, leading to a complete product.
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03:42
Finding Zeros & Their Multiplicity
Combining Like Terms
After multiplying the binomials, the resulting expression may contain like terms, which are terms that have the same variable raised to the same power. Combining these terms simplifies the expression, making it easier to interpret and work with in further calculations.
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5:22
Combinations
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