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Solving Quadratic Equations by Factoring  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
To solve an equation by factoring, your first step is to rewrite it in standard form, meaning the exponents are going in decreasing order and it is equal to zero. From there, always start by looking for a greatest common factor it may be a number, a variable, or even the product of a number and variable. Finding the greatest common factor will make the remaining factoring much easier. Next, factor the polynomial that remains here, we'll do examples that involve the difference of perfect squares. When it is all factored, set each factor equal to zero (including the greatest common factor term that you pulled out in the beginning) and solve for x.
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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 14,956 viewsSolve by factoring:
x² + 4x = 0 
Solving Quadratic Equations by Factoring
Problem 2 12,105 viewsSolve by factoring:
x² + 2x = 15 
Solving Quadratic Equations by Factoring
Problem 3 10,918 viewsSolve by factoring:
x² + 6x + 9 = 0 
Solving Quadratic Equations by Factoring
Problem 4 11,041 viewsSolve by factoring:
3x² − 18x = 27 
Solving Quadratic Equations by Factoring
Problem 5 1,593 views 
Solving Quadratic Equations by Factoring
Problem 6 1,571 views 
Solving Quadratic Equations by Factoring
Problem 7 1,369 views 
Solving Quadratic Equations by Factoring
Problem 8 1,317 views 
Solving Quadratic Equations by Factoring
Problem 9 1,303 views 
Solving Quadratic Equations by Factoring
Problem 10 1,341 views 
Solving Quadratic Equations by Factoring
Problem 11 1,199 views 
Solving Quadratic Equations by Factoring
Problem 12 1,241 views 
Solving Quadratic Equations by Factoring
Problem 13 1,209 views 
Solving Quadratic Equations by Factoring
Problem 14 1,377 views 
Solving Quadratic Equations by Factoring
Problem 15 1,194 views 
Solving Quadratic Equations by Factoring
Problem 16 553 views 
Solving Quadratic Equations by Factoring
Problem 17 578 views 
Solving Quadratic Equations by Factoring
Problem 18 489 views 
Solving Quadratic Equations by Factoring
Problem 19 556 views 
Solving Quadratic Equations by Factoring
Problem 20 539 views 
Solving Quadratic Equations by Factoring
Problem 21 537 views 
Solving Quadratic Equations by Factoring
Problem 22 502 views
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