This CoolMath resource will help students solve quadratic equations with a square roots trick instead of through factoring.

Simplify square roots that contain variables in them.

An interactive game where students can sharpen their skills for calculating simple square roots.

College professor Dan Bach offers a review of various basic topics in arithmetic, pre-algebra, and algebra. Order of operations, exponents, square roots, variables, and combining terms are just a few of the many topics covered.

Learn how to find the root of a number. Topics covered include two roots, roots of negative numbers, and imaginary numbers. This site offers descriptions along with multiple examples.

A comprehensive guide for learning all about complex numbers with definitions, operations on complex numbers, solved examples, and practice questions.