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The Khan Academy is a not-for-profit 501(c)(3) with the mission of providing a world-class education to anyone, anywhere. Despite being the work of one man, Salman Khan, this 1600+ video library is the most-used educational video resource as measure...

Free Homework Help Videos in Math (Algebra 1-2, Geometry, Trigonometry, Precalculus, Calculus) & Science (Physics, Chemistry, Biology); SAT, ACT, AP & PSAT

University of Minnesota Morris offers a small, close-knit campus with the power of a world-renowned research University system.

The Home page of the University of Illinois Laboratory Highschool, in Urbana, which is a competitive public admission school.

YouTube is a place to discover, watch, upload and share videos.

Texas Instruments is committed to providing calculators and educational solutions that will enhance student performance in math and science. Your Passion. Our Technology. Student Success.

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Free math problem solver answers your basic math, algebra, trigonometry, and calculus homework questions with step-by-step explanations.