Algebra can be used ... not work (called a counter-example) is enough to show that the rule does not always work. If \(p\) is an even number, show that \((p + 1) \times (p + 5)\) is odd.

A mathematical proof is a sequence of statements that follow on logically from each other that shows that something is always true. Using letters to stand for numbers means that we can make ...

Ninth Grade Algebra, a division of LP Consulting, LLC, has launched “9th Grade Algebra Made Easy”, a comprehensive resource designed to help high school students build a strong foundation in algebra ...