# Author Archive | Shaun Ault

## Multiplying Fractions

Multiplying fractions is a piece of cake! In this article you’ll learn all you need to know about multiplying fractions, including mixed fraction methods.

## Equation of a Circle Explained

You’ll see how to work with the algebraic equation of a circle. And then you’ll see what algebra can tell us about the area of a circle formula.

## How to Add and Subtract Matrices

A matrix is just an array or table of numbers. You can find out how to add and subtract matrices in this short article. Read on for more!

## 5 Things You Should Know About Real Numbers in Math

What are real numbers? Basically, any number that you could use to measure a distance, including all positives, negatives, and zero. Learn more here!

## What Are Complex Numbers?

What are complex numbers? Complex numbers are what you get when you mix real and imaginary numbers together — a very complicated relationship indeed!

## Math Practice: Working with Radical Expressions

Radical expressions in mathematics involve square roots, cube roots, and the like. Simplifying radicals and working with radical expressions are important!

## What Is the Binomial Theorem?

What is the Binomial Theorem? This algebraic tool is perhaps one of the most useful and powerful methods for dealing with polynomials! The Binomial Theorem shows how to expand any whole number power of a binomial — that is, (x + y)n — without having to multiply everything out the long way. The Binomial Theorem […]

## Math Practice: Negative and Fractional Exponents

Exponents can be tricky. We’ll review the laws of exponents and gain practice working out problems involving negative exponents and fractional exponents.

## PEMDAS Explained

Please Excuse My Dear Aunt Sally, or PEMDAS, is a way to remember the order of operations in math. Because so much of mathematics depends on getting the order of operations correct, it’s essential to understand the PEMDAS rules inside and out! But what is PEMDAS? And what did Aunt Sally do that needs to […]