Changes
From Karnataka Open Educational Resources
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, 15:17, 22 August 2014
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'''back to concept page'''
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'''back to concept page'''[http://karnatakaeducation.org.in/KOER/en/index.php/Quadratic_Equations#Hints_for_difficult_problems "solution"]<br>
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[[http://karnatakaeducation.org.in/KOER/en/index.php/Quadratic_Equations#Hints_for_difficult_problems| quadratic equation problems]]