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Factoring Trinomials, a is not 1  Problem 11
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
Factoring is the process of turning a sum or difference into a product, or multiplication problem. In this case, we're looking to turn a trinomial into the product of two binomials. One interpretation of this that is useful for visual learners is to think of how the area of a rectangle is equal to the product of the sides. In a 2 by 2 box, the upper left and bottom right areas of the rectangle are fixes, but in order to find the other parts of the box, a "diamond" trick is drawn, where the top of the diamond is the product of the the trinomial's first and third terms, and the bottom of the diamond is the middle term. Find two numbers that multiply to the top and add to the bottom, and those will be the diagonals in the rectangle model.
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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.”
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Sample Problems (11)
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Factoring Trinomials, a is not 1
Problem 1 11,153 viewsFactor:
3x² − 2x − 8 
Factoring Trinomials, a is not 1
Problem 2 7,403 viewsFactor:
6x² + 17x + 5 
Factoring Trinomials, a is not 1
Problem 3 6,292 viewsFactor:
3x² − 17x − 10 
Factoring Trinomials, a is not 1
Problem 4 6,634 viewsFactor:
20x² + 80x + 35 
Factoring Trinomials, a is not 1
Problem 5 1,107 views 
Factoring Trinomials, a is not 1
Problem 6 994 views 
Factoring Trinomials, a is not 1
Problem 7 991 views 
Factoring Trinomials, a is not 1
Problem 8 923 views 
Factoring Trinomials, a is not 1
Problem 9 1,026 views 
Factoring Trinomials, a is not 1
Problem 10 1,006 views 
Factoring Trinomials, a is not 1
Problem 11 1,020 views
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