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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.
Sample Problems (22)
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Solving Quadratic Equations by Factoring
Problem 1 15,503 viewsSolve by factoring:
x² + 4x = 0 
Solving Quadratic Equations by Factoring
Problem 2 12,576 viewsSolve by factoring:
x² + 2x = 15 
Solving Quadratic Equations by Factoring
Problem 3 11,314 viewsSolve by factoring:
x² + 6x + 9 = 0 
Solving Quadratic Equations by Factoring
Problem 4 11,548 viewsSolve by factoring:
3x² − 18x = 27 
Solving Quadratic Equations by Factoring
Problem 5 1,867 views 
Solving Quadratic Equations by Factoring
Problem 6 1,845 views 
Solving Quadratic Equations by Factoring
Problem 7 1,619 views 
Solving Quadratic Equations by Factoring
Problem 8 1,539 views 
Solving Quadratic Equations by Factoring
Problem 9 1,518 views 
Solving Quadratic Equations by Factoring
Problem 10 1,566 views 
Solving Quadratic Equations by Factoring
Problem 11 1,427 views 
Solving Quadratic Equations by Factoring
Problem 12 1,530 views 
Solving Quadratic Equations by Factoring
Problem 13 1,432 views 
Solving Quadratic Equations by Factoring
Problem 14 1,655 views 
Solving Quadratic Equations by Factoring
Problem 15 1,432 views 
Solving Quadratic Equations by Factoring
Problem 16 787 views 
Solving Quadratic Equations by Factoring
Problem 17 808 views 
Solving Quadratic Equations by Factoring
Problem 18 698 views 
Solving Quadratic Equations by Factoring
Problem 19 746 views 
Solving Quadratic Equations by Factoring
Problem 20 737 views 
Solving Quadratic Equations by Factoring
Problem 21 752 views 
Solving Quadratic Equations by Factoring
Problem 22 753 views
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