Two Factoring Problems
Simplifying more complex radicals with numbers and variables.
Two Solutions to a Complicated Bakery Problem
A complicated word problem involving a baker on a budget who wants to know how much white flour and how much rye flour he can purchase with his available funds. By reducing the problem to a series of simpler problems and..
Two Solutions to a Complicated Copy Machine Problem
Complicated word problems are best handled by breaking them into simpler parts, as demonstrated in a rate and time problem. Two different approaches, both using a table to help organize the data, lead to the correct conc..
Two examples using Parentheses in Algebra
Two examples evaluating the effect of parentheses on algebraic expressions.
Using Division to Change Terms
In addition to addition, subtraction, and multiplication, division can be used to change the numbers in a system.
Using Elimination Twice to Solve a System
To avoid working with fractions or other awkward numbers, it is sometimes preferable to eliminate twice instead of eliminating and then substituting.
Using Factoring to Solve an Equation
An equation is presented for solution in which factoring must be used. The solution is detailed and checked.
Using Intercepts to Graph Linear Equations
How to graph linear equations using intercepts.
Using Least Common Multiples to Eliminate a Variable
A strategy that can sometimes make it easier to find the solution to a system of equations is using the least common multiple of the coefficients. The advantage to this strategy is that you will have small numbers in the..
Using Multiplication to Change Terms
How to use the multiplication property of equality to generate terms that are additive inverses so the elimination method can be employed to solve a system of equations.