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In algebra, a difference of squares is just one method of factoring expressions. It is used in the special case when we have a binomial with square terms: one positive term and one negative...
Parallel lines are used often in geometry (for proofs) or in algebra (as the result of systems of linear equations). No matter how you use this important concept, it helps to know when two...
Cubic functions are useful for modeling the volume of objects (such as spheres or boxes). However, there is a lot to know about these third degree polynomials, their roots, and their...
Absolute value is used throughout mathematics and in other disciplines as well, including physics and finance. However, it still helps to know exactly when it might be used, along with how to...
Proof by mathematical induction is useful for proving many statements involving the natural numbers. The best part about this proof method is that the two main steps are always the same. So,...
Direct variation comes up often in math and is also used in our everyday lives. However, there are still lots of questions that you can ask about direct variation. So, what is direct...