Learn how to solve radical equations and check answers for extraneous solutions using this step-by-step tutorial. By PreMath.com

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Visit http://ilectureonline.com for more math and science lectures! In this video I will find the vertices, center, foci, asymptotes, and graphs x^2-y^2-2x-4y-7=0. Next video in this series can be seen at: http://youtu.be/Ku_Y6W4tBxY