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Solving Quadratic Equations by Factoring  Problem 10
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
The equation for the volume of a box is length times width times height, so it is likely that you will actually be dealing with a cubic function. Put it into standard form by setting it equal to zero, expanding any products, and ordering the terms so the exponents go in decreasing order. Since x will most likely be a common factor, you can factor it out or look to use factoring by grouping to factor your polynomial. Set each factor equal to zero to solve for x. Substitute your x value back in to make sure that your calculations are correct.
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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 14,768 viewsSolve by factoring:
x² + 4x = 0 
Solving Quadratic Equations by Factoring
Problem 2 11,947 viewsSolve by factoring:
x² + 2x = 15 
Solving Quadratic Equations by Factoring
Problem 3 10,791 viewsSolve by factoring:
x² + 6x + 9 = 0 
Solving Quadratic Equations by Factoring
Problem 4 10,839 viewsSolve by factoring:
3x² − 18x = 27 
Solving Quadratic Equations by Factoring
Problem 5 1,492 views 
Solving Quadratic Equations by Factoring
Problem 6 1,479 views 
Solving Quadratic Equations by Factoring
Problem 7 1,303 views 
Solving Quadratic Equations by Factoring
Problem 8 1,251 views 
Solving Quadratic Equations by Factoring
Problem 9 1,235 views 
Solving Quadratic Equations by Factoring
Problem 10 1,277 views 
Solving Quadratic Equations by Factoring
Problem 11 1,144 views 
Solving Quadratic Equations by Factoring
Problem 12 1,166 views 
Solving Quadratic Equations by Factoring
Problem 13 1,147 views 
Solving Quadratic Equations by Factoring
Problem 14 1,301 views 
Solving Quadratic Equations by Factoring
Problem 15 1,124 views 
Solving Quadratic Equations by Factoring
Problem 16 482 views 
Solving Quadratic Equations by Factoring
Problem 17 517 views 
Solving Quadratic Equations by Factoring
Problem 18 439 views 
Solving Quadratic Equations by Factoring
Problem 19 494 views 
Solving Quadratic Equations by Factoring
Problem 20 481 views 
Solving Quadratic Equations by Factoring
Problem 21 475 views 
Solving Quadratic Equations by Factoring
Problem 22 418 views
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