Applied Mathematics: Algebra

Khan Academy

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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.

Quadratics 

• 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.