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Expert: Sherry Wallin - 1/17/2010


Question
I'm trying to find the answer to this equation(-5-square root-9)2

Answer
Hi Tammy, there is no equation here. In order for there to be an equation you must have an equal sign. Maybe you meant evaluate? Did you mean for the stuff in the parentheses to be multiplied by 2? If so, then you have -10-2*sqrt(-9) = -10-2(3i) = -10-6i. Of course this is providing you are working with the set of complex numbers. If you are in the real numbers only then you can't take the square root of a negative number, so an answer in that case does not exist.

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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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