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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 15,976 viewsSolve by factoring:
x² + 4x = 0 
Solving Quadratic Equations by Factoring
Problem 2 12,988 viewsSolve by factoring:
x² + 2x = 15 
Solving Quadratic Equations by Factoring
Problem 3 11,681 viewsSolve by factoring:
x² + 6x + 9 = 0 
Solving Quadratic Equations by Factoring
Problem 4 12,053 viewsSolve by factoring:
3x² − 18x = 27 
Solving Quadratic Equations by Factoring
Problem 5 2,134 views 
Solving Quadratic Equations by Factoring
Problem 6 2,127 views 
Solving Quadratic Equations by Factoring
Problem 7 1,848 views 
Solving Quadratic Equations by Factoring
Problem 8 1,774 views 
Solving Quadratic Equations by Factoring
Problem 9 1,769 views 
Solving Quadratic Equations by Factoring
Problem 10 1,803 views 
Solving Quadratic Equations by Factoring
Problem 11 1,631 views 
Solving Quadratic Equations by Factoring
Problem 12 1,807 views 
Solving Quadratic Equations by Factoring
Problem 13 1,642 views 
Solving Quadratic Equations by Factoring
Problem 14 1,917 views 
Solving Quadratic Equations by Factoring
Problem 15 1,629 views 
Solving Quadratic Equations by Factoring
Problem 16 996 views 
Solving Quadratic Equations by Factoring
Problem 17 988 views 
Solving Quadratic Equations by Factoring
Problem 18 878 views 
Solving Quadratic Equations by Factoring
Problem 19 995 views 
Solving Quadratic Equations by Factoring
Problem 20 923 views 
Solving Quadratic Equations by Factoring
Problem 21 957 views 
Solving Quadratic Equations by Factoring
Problem 22 979 views
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