# Applied Mathematics: Algebra

Click on tabs below for resources on this subject.

The Khan Academy is a not-for-profit organization with the goal of changing education for the better by providing a free world-class education to anyone anywhere.

All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy's materials and resources are available to you completely free of charge.

## Algebra Tutorials

Conceptual videos and worked examples from basic algebra through algebra 2. Includes videos from the former algebra worked examples playlists.

Introduction to Algebra

• Videos exploring why algebra was developed and how it helps us explain our world.

Linear equations

• Solving one-step and multi-step equations in one variable.

Systems of equations and inequalities

• Solving a system of equations or inequalities in two variables by elimination, substitution, and graphing.

Ratios & proportions

• Solving and writing algebraic ratios and proportions. Solving rational equations.

Absolute value

• Understanding absolute value and solving absolute value equations and inequalities.

Exponents and radicals and scientific notation

• Solving exponential and radical expressions and equations. Using scientific notation and significant figures.

Logarithms

• Understanding and solving logarithms, including natural logs.

Polynomials

• Using polynomial expressions and factoring polynomials.
• Solving quadratics through factoring, completing the square, graphing, and the quadratic equation.

Functions

• Identifying, solving, and graphing various types of functions.

Conic sections

• Identifying and graphing circles, ellipses, parabolas, and hyperbolas.

Complex numbers

• Understanding and solving equations with imaginary numbers.

Matrices

• Understanding and solving matrices.I.