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Solving an Equation with Radicals  Problem 13
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
In order to solve equations where a radical equals a constant, you first need to isolate the square root. From there, square both sides to "undo" the root, and solve for x. Once you have a solution(s), you'll need to check to make sure they're not extraneous. Any value of x that would make the radicand, or whatever is under the radical sign negative is outside of the domain, or extraneous. Here we'll see an example of a radical equation that has no solution.
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
Thanks alot for such great lectures... I never found learning this easier ever before... keep up the great work.... :)”
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Concept (1)
Sample Problems (13)
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Solving an Equation with Radicals
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Problem 2 4,637 viewsSolve:
√x + 2 = x 
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Problem 3 4,339 viewsSolve:
√3x − 2 − √x + 3 = 1 
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Problem 4 629 views 
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Problem 12 503 views 
Solving an Equation with Radicals
Problem 13 547 views
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