02:20duration 2 minutes 20 seconds

Solving a word problem with two unknowns using a…

Solving a word problem with two unknowns using a linear equation.

This shows how to represent the two unknowns using their given relationship so that a linear equation can be written using one variable. Then that equation is solved to answer the question

01:51duration 1 minute 51 seconds

Introduction to simplifying a sum or difference…

Introduction to simplifying a sum or difference of radical expressions: Univariate

Two examples of reducing radicals to then be able add or subtract like radicals