Algebra 2 | ClassBrain Math

Solving Linear Systems Using Matrix Algebra

One of the most common applications of square matrices is to solve systems of linear equations. Solving linear systems using matrix algebra is more efficient than hand calculating the systems using...

Simplifying Complex Fractions

When you simplifying complex fractions, factor the numerator and denominator into terms multiplying each other and look for equivalents of one (something divided by itself). Include parenthesis around any...

Augmented Matrices

To solve a system of linear equations, we can use substitution, elimination or something we call augmented matrices. To use matrices to solve a system of linear equations, we first enter the values...

Solving a Quadratic Equations by Completing the Square

Solving quadratics can be difficult. Completing the square is one method for solving a quadratic equation. A quadratic equation can also be solved by factoring, using the square roots, or using the...

Solving Linear Equations

Equations are fundamental to Algebra, and solving linear equations is necessary for you to learn how to solve two-step equations, and other multi-step equations. Solving linear equations involves finding...

Natural and Common Logarithms

If logarithms seem like Greek to you, this interactive algebra 2 lesson will help you sort things out. We can use many bases for a logarithm, but the bases most typically used are the bases of the common...

Periodic Trigonometric Functions

Periodic Functions: Sine and cosine are periodic functions, which means that sine and cosine graphs repeat themselves in patterns. You can graph sine and cosine functions by understanding their period and...

Introduction to Sequences

This is an introduction to sequences. Lists of numbers, finite and infinite, that follow certain rules are called sequences. This lesson covers the definition of a sequence, and how to identify a rule....

Translations

Are you lost in translation when it comes to translating a graphed object? This free video lesson will explain it in simple terms and make translations into child’s play. This video is brought to you by...

Standard Form of a Line

The standard form of a line puts the x and y terms on the left hand side of the equation, makes the coefficient of the x-term positive, and puts everything else on the right side. The standard form is not...