Elementary Algebra Practice Exam Solutions #20-22
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Lesson Summary:
In this lesson, the instructor provides solutions to a practice test for an online elementary algebra class. The solutions include solving a word problem to determine the cost of jackets and hats, multiplying polynomials, and finding solutions to various equations. The instructor shows how to use different methods to solve these problems and emphasizes the importance of checking solutions to ensure they are accurate.
Lesson Description:
These are solutions to a Practice Test made for my online Elementary Algebra class.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- Where can I find Algebra practice exam problem questions and answers?
- How do you write and solve a system of equations from a word problem?
- If 3 jackets and 2 hats cost $156, and 1 jacket and 5 hats cost $117, how much does each cost?
- How do you solve the system of equations 3J + 2H = 156 and J + 5H = 117?
- How can you check your answers to a system of equations?
- If you know one of the values of a variable in a system of equation, how do you find the value of the other variable?
- How do you multiply binomials and combine like terms?
- How do you FOIL with two binomials?
- How do you multiply and simplify (5x + 3)(7x - 2)?
- How do you multiply and simplify (6x - 9)^2?
- How do you square a binomial?
- What is (3x + 11)(3x - 11)?
- What is a difference of squares and how do you recognize them?
- How do you find solutions to a factored equation that is equal to 0?
- How do you find all solutions to (2x + 5)(x - 8) = 0?
- What are the solutions to 4x(5x - 7)(3x + 5) = 0?
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Staff Review
This lesson goes through some example problems from a practice Algebra exam. Each step in the problems is shown clearly. The topics covered in this video are writing and solving a system of equations from a word problem, multiplying binomials and combining like terms, and finding all solutions to a factored equation that is equal to 0.
