Khan Academy
Introduction to the Quadratic Equation, Quadratic Equations, Algebra I
Sal first solves some equations using the factoring method he has already taught. Next, he introduces the quadratic formula and demonstrates how to plug the numbers from the quadratic equation into the quadratic formula. He then solves...
Khan Academy
Quadratic Equation Part 2, Quadratic Equations, Algebra I
The instructor continues solving quadratic equations by plugging values into the quadratic formula. These examples are more difficult because the answers do not correspond to whole numbers.
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 Determine the Zeros of a Polynomial Function from a Table of Values?
First, review the location principle and then use a table to determine the zeros for the function your trying to solve. This tutorial defines the location principle, works through a table, identifies where sign changes occur, then uses...
Curated OER
Plant Reproduction: Asexual Reproduction
Asexual reproduction in plants occurs from bulbs, perennating organs, or even gardening techniques like cuttings. Commercial growers rely on the ability of some plants to reproduce asexually and grow roots rather than starting from...
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...