I want to be a master of algebra including polynomials.I have completed questions of icse and cbse books but still I suffer when I solve olympiad level questions.Please prescribe some books and tips.I am currently in class 9th.

First study the concepts of polynomials, quadratic equations and other algebra chapters clearly as they are very important. Then take some standard books like ML Khanna and Arihant Books. If you have joined any coaching for IITJEE, the study material will cover most of the topics. For more information, check out the AskIITian blog here: http://blog.askiitians.com/improve-mathematics-scores-jee-main-advanced-help-notable-books/