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Expert: Sherry Wallin - 5/6/2009


Question
x^3+5x^2+2x=0

Answer
Hi Tim~
    Please post the question you need answered. I am going to assume you want to solve this equation. factor first: x(x^2+5x+2)= 0. So either x = 0 or x^2+5x+2 = 0 You can either use completing the square or the quadratic formula to factor x^2+5x+2: (using quadratic formula)[-5+-sqrt(5^2-4(1)(2))]/2 which means that
x = [-5 +-sqrt(17)]/2 -> x = [-5+sqrt(17)]/2 or x = [-5-sqrt(17)]/2

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Sherry Wallin

Expertise

I can answer most questions up through Calculus and some in Number Theory and Abstract Algebra.

Experience

I have had my Bachelor's Degree since 1987 and have been a teacher since 1988. I earned my Masters Degree in Mathematics May 2010. I have been teaching at the same community college since 2002.

Education/Credentials
I have taught 12 years at the community college level, medical college, and technical college as well as a high school instructor and alternative education instructor and charter school instructor.

Awards and Honors
Master's GPA 3.56 Bachelor's GPA 3.34 Post grad work not degree related GPA 4.0

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