Khan Academy
Graphs of Square-Root Functions, Functions and Their Graphs, Algebra II
Though Sal expects viewers to be "reasonably familiar" with square roots, he takes this opportunity to explain some of the notation and how to graph square root functions. He uses a graphing calculator from my.hrw.com/math06 to...
Khan Academy
SAT Prep: Test 2 Section 6 Part 2
Reviewing the last problem from the previous video because he feels that he "rushed it," Sal again explains the concept of ratios as it applies to problem 6 on the practice SAT (page 472 in The Official SAT Study Guide). Additional...
Curated OER
SAT Prep: Test 3 Section 8 Part 1
Section 8 of the practice tests from The Official SAT Study Guide begins with problems about sets of integers, linear equations with radicals, and geometric angles, among others. Sal solves each problem in quick succession, demonstrating...
Khan Academy
SAT Prep: Test 1 Section 9 Part 4
Sal tackles problems 12-14 of the practice SAT, which deal with linear equations (with negative numbers and radicals). Demonstrating more than one way to solve the problems, Sal takes care to note the most efficient ways to still arrive...
Curated OER
How Do You Simplify Radicals Using the Product Property?
It would be difficult to explain how to write the given radical , the square root of 60, in its simplest form. It's not a perfect square so there are several steps required to break it down and get it to its simplest form. Just watch...
Curated OER
How Do You Add Radicals With Like Radicands?
Combine the given radical expressions. How? Do they have the same radical? Yes. Then they can be combined. Watch this video as the teacher explains how to combine the terms that can be combined and leave the terms as they are that need...
Curated OER
How Do You Subtract Radicals with Like Radicands ?
Subtract the given radicals. Not so difficult really! If the radicals are like terms, then it's as simple as combining the coefficients. Yes, it's really that simple.
Curated OER
How Do You Subtract Radicals with Unlike Radicands?
Radicals , radicands , square roots, perfect squares, and subtracting? Sounds complicated, especially because the radicals are not the same in this problem. So, there's a lot of math work to do here. Watch this video to find out how to...