Khan Academy: Pre Algebra: Adding and Simplifying Radicals

It doesn't get simpler than this. Scholars first learn to simplify radicals by determining the prime factors of the radicand. The lesson progresses to simplifying radicals involving algebraic expressions in the radicand.

Video showing how to add radicals and then simplify the results. [4:41]

Not all good things in life need to be difficult. Scholars review how to simplify radicals by watching a video and completing a packet of review problems. They also learn to add and subtract radical expressions that have different...

Radical, dude! The resource provides an explanation on how to simplify radical expressions. It makes clear that radical expressions are ones that are strictly numerical but also are algebraic expressions. One of the problem sets...

The sequel to Polar Coordinates 1 from the Khan Academy, this segment goes through some examples on converting polar coordinates to rectangular coordinates and converting a Cartesian equation to a polar equation. Graphing is also used to...

This video follows from Khan Academy: Sequences and Series (Part 1) and furthers the idea of the basic geometric series. Explains how to find the sum of both a finite and an infinite geometric series. Uses limits to find the sum of an...

The third video in the Khan Academy's series on Polar Coordinates. This final segment goes through several more examples of converting Cartesian equations to polar equations and vice versa. This video is also included in the Trigonometry...

The second video on Benford's Law from the Khan Academy. This video connects Benford's Law to the logarithmic scale in an effort to explain why it holds true, particularly in data that grows exponentially. [6:27]

Another segment in the series on compound interest and the number e from the Khan Academy. This video begins to derive the formula for interest compounded continuously (A=Pe^rt). Limits are employed to show that the limit of the interest...

A continuation of the video Introduction to Interest also from the Khan Academy. This segment develops formulas for both simple and compound interest using the variables P, r and t. After each of the formulas are derived, they are used...