Algebra allows us to work with numbers whose values we don't know, and is essential for problem solving.
This section looks at quadratic equations. These are encountered regularly in real life problems, though not as frequently as linear equations. The factorisation method of solution is used mainly for classroom problems and in theoretical mathematics. The quadratic formula is usually used in real life applications.
Try the questions below to refresh your memory and check your skills. Follow the links for more information.Use the menu bar at the bottom of the page to return or to contact the Maths Learning Service.
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