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Mathematics 7 Online
OpenStudy (anonymous):

Is there a website that will do Quadratic equations using the quadratic formula? Mathway.com doesn't work.

OpenStudy (anonymous):

wolframalpha.com

OpenStudy (anonymous):

it will do just about anything, free

Directrix (directrix):

Quadratic Equation Calculator http://www.1728.org/quadratc.htm Enter "online quadratic equation calculator" in a search engine query field. You will see several such calculators. Consider whether you need exact answers and test the calculators to see what happens when the roots are not real.

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