Solving Radical Equations 4
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Lesson Summary:
In this lesson, we review how to solve equations containing radical expressions. The video provides three sample equations to practice. First, we isolate one of the radical expressions, then we square both sides to eliminate the square root. We continue to isolate the radical expression until we are left with an equation that we can solve. The video also emphasizes that the square root of a number cannot be negative, so if we end up with a negative result, the solution is the null set.
Lesson Description:
More practice solving radical equations.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you solve a radical equation?
- How do you solve a radical equation if there are square roots on both sides?
- What are the steps for solving a radical equation?
- Why is it important to check solutions to a radical equation?
- How do you solve an equation with a fourth root in it?
- How do you solve sqrt(x) - sqrt(x + 9) = 1?
- How do you solve sqrt(7x - 5) = sqrt(5 - 7x)?
- How do you solve (fourth root of x + 3) - 5 = -3?
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Staff Review
This lesson goes through some more practice problems for solving radical equations. One problem has a fourth root in it, and the other two problems have multiple square roots in them. All steps for all problems are shown as well as all checks. This is a great tutorial for extra radical equation practice.
