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Solving Quadratic Equations by Factoring  Problem 8
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
To solve a quadratic equation, the first thing you need to do is write it in standard form, meaning the exponents are going in decreasing order and it is equal to zero. From there, look for a greatest common factor. Factor what is left. Then set each factor equal to zero because of the zero product property, and solve each one for x. It is always a good idea to check your work by substituting each value back into the original equation to make sure it is indeed a 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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Sample Problems (22)
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Solving Quadratic Equations by Factoring
Problem 1 15,176 viewsSolve by factoring:
x² + 4x = 0 
Solving Quadratic Equations by Factoring
Problem 2 12,253 viewsSolve by factoring:
x² + 2x = 15 
Solving Quadratic Equations by Factoring
Problem 3 11,053 viewsSolve by factoring:
x² + 6x + 9 = 0 
Solving Quadratic Equations by Factoring
Problem 4 11,202 viewsSolve by factoring:
3x² − 18x = 27 
Solving Quadratic Equations by Factoring
Problem 5 1,671 views 
Solving Quadratic Equations by Factoring
Problem 6 1,649 views 
Solving Quadratic Equations by Factoring
Problem 7 1,431 views 
Solving Quadratic Equations by Factoring
Problem 8 1,379 views 
Solving Quadratic Equations by Factoring
Problem 9 1,364 views 
Solving Quadratic Equations by Factoring
Problem 10 1,406 views 
Solving Quadratic Equations by Factoring
Problem 11 1,265 views 
Solving Quadratic Equations by Factoring
Problem 12 1,331 views 
Solving Quadratic Equations by Factoring
Problem 13 1,269 views 
Solving Quadratic Equations by Factoring
Problem 14 1,465 views 
Solving Quadratic Equations by Factoring
Problem 15 1,265 views 
Solving Quadratic Equations by Factoring
Problem 16 622 views 
Solving Quadratic Equations by Factoring
Problem 17 638 views 
Solving Quadratic Equations by Factoring
Problem 18 542 views 
Solving Quadratic Equations by Factoring
Problem 19 608 views 
Solving Quadratic Equations by Factoring
Problem 20 598 views 
Solving Quadratic Equations by Factoring
Problem 21 593 views 
Solving Quadratic Equations by Factoring
Problem 22 581 views
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