Solve [math]2x^2 + 9 = –8x[/math] by using the quadratic formula. Check your solutions. Explain how the graph of the related function supports the type of solutions.

[list=1][*]Substitute values for the equation into the quadratic formula.[br][/*][*]Check the solutions.[br][/*][*]Explain how the graph of the related quadratic function supports the type of solutions.[br][/*][/list][br][br]This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit [url=http://www.walch.com]www.walch.com[/url] for more information.