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...Chapter quadratic equations and functions solve inequalities learning objectives by the end of this section you will be able to graphically algebraically prepared before get started take readiness quiz x if missed problem review example y wehavelearnedhowtosolvelinearinequalities rational previously some techniques we used them were same different wewillnowlearntosolveinequalities that have a expression use from solving linear as well two ways both aquadratic equation is in standard form when written ax bx c replace equal sign with an inequality contains thegraphofaquadraticfunction f parabola ask are asking want know below axis whenweaskwhenisax weareaskingwhenisf wewanttoknowwhentheparabolaisabove openstax book available for free at http cnx org content col how write solution interval notation try it...