A more complex quadratic problem- You simplify the 3 rd step in the example to the –3 + and – radical 5. The last step, simplify the 2 and –8 after by 2…leaving a –4 on the bottom.
BBC - H2g2 - The History Behind The Quadratic Formula." BBC - Homepage . H2g2's Researchers, 13 Oct. 2004. Web. 11 Oct. 2010. <http://www.bbc.co.uk/dna/h2g2/A 2982567>.
"Quadratic Formula." Math Homework Help – Math
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