Curated OER
How Do You Find Excluded Values?
Teach excluded values with this video. Using a real example, a lecturer breaks down how to find the excluded values of a rational expression. She defines what an excluded value is and completes the problem, explaining each step along the...
Curated OER
How Do You Figure Out if a Square Root is Bigger than Another Number?
You have been given a square root and need to compare that to a decimal number to find out which one is bigger. How can you make that comparison? One way to do this is to find the square root of the square root number and then compare it...
Curated OER
How Do You Find the Area of a Rectangle Whose Sides are Binomials?
The teachers uses a diagram to set up her initial equation to reflect the changes being made to a garden plot. She has a good explanation of how she got her equation. Then she works through the steps to solve the equation.
Curated OER
How Do You Find the Square Root of a Fraction?
The instructor demonstrates how to find the square root of a fraction. She simply explains that you separate the numerator and denominator, meaning you find the square root of the numerator, and then you find the square root of the...
Curated OER
How Do You Find the Distance Between Two Points?
Learn how to use an algebraic formula to find the distance between two given points on a coordinate plane.
Mathispower4u
Determine Rational or Irrational Numbers (Square Roots and Decimals Only)
Rational or irrational ... it can only be one or the other. Viewers of a YouTube video learn how to distinguish between rational and irrational numbers. In particular, the video focuses on numbers written as square roots and as decimals.
Krista King Math
Imaginary Numbers
Scholars learn to use their imagination in math class! The tutorial explains the origin of the number i and then simplifies expressions that include imaginary numbers. The examples include i raised to different powers, giving...
Khan Academy
MTEL Math Practice Test: 1-4
Are you worried about the MTEL? Never fear—Sal is here! Designed for adults seeking their teaching credentials in Massachusetts, this series of videos guides future teachers through a practice test for the Math MTEL. The valuable...
Curated OER
How Do You Find the Square Root of a Perfect Square?
What is the relationship between squaring a number and taking the square root of a number? The instructor in the video explains the relationship of perfect square and its square root integer.
Curated OER
How Do You Multiply Two Radicals?
Multiply radicals just like you would multiply any terms. Yes, but of course there is more to do to simplify the product. Combine, factor, separate, and square root are some of the things that need to be done to get to the solution of...
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 Find the Length of a Leg of a Right Triangle?
A right triangle. Two given measurements for two side lengths and one unknown length. Use the Pythagorean theorem to solve this problem and find the missing value. Squares and square roots are used in this problem and don't worry when...
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...
Curated OER
How Do You Solve a Quadratic Equation by Completing the Square?
Completing the square is an effective way to solve a quadratic equation. Introduce your class to this technique and use this video to complement your lesson. This resource takes viewers through the process of completing the square,...
Curated OER
How Do You Find the Area of a Rectangle Whose Sides are Binomials?
The teacher uses a diagram to set up her initial equation to reflect the changes being made to a garden plot. She has a good explanation of how she got her equation. Then she works through the steps to solve the equation.
Curated OER
What Happens When You Square a Square Root?
Are squaring and taking the square root opposite operations? Are there other operations that are opposites? Yes, addition and subtraction are opposite operations. So are multiplication and division. The instructor illustrates how...
Curated OER
How Do You Figure Out if a Square Root is Bigger than Another Number?
You have been given a square root and need to compare that to a decimal number to find out which one is bigger. How can you make that comparison? One way to do this is to find the square root of the square root number and then compare it...
Curated OER
What is the Quadratic Formula?
What do you do when you are trying to solve a quadratic equation and factoring and graphing aren't working out for you? Use the quadratic formula! Watch this video to find out exactly how to find your solutions with the quadratic...
Virtual Nerd
How Do You Solve a Radical Equation?
Oh my, there's a variable inside the radical . How will you ever solve this one? The teacher explains step-by-step just how to solve this radical equation. She also shows how to check to make sure the answer is the correct one.
Math Planet
Math Planet: Perfect Squares and Square Roots
Students learn how to approximate square roots through class notes and a video lesson.
Virtual Nerd
Virtual Nerd: How Do You Multiply Two Radicals?
In this tutorial, discover how to multiply two radicals together and then simplify their product. [4:03]
Khan Academy
Khan Academy: Intro to Cube Roots
By watching this video lesson, students will learn the meaning of cube roots and how to find the cube root of a negative number. [8:00]
Sophia Learning
Sophia: Rationalizing the Denominator
This video tutorial demonstrates how to rationalize the denominator in a fraction. The lesson includes detailed examples.
Khan Academy
Khan Academy: Radical Radicals: Square Roots and Real Numbers
This resource explains how to find the square root of real numbers using their prime factorizations and labeling the results as rational or irrational. [10:19]