Although a factor of one is not usually written in an expression, it sometimes helps to write it down in order to remember that it is part of the factor and can be used, as demonstrated in the example c2 - cd c - d.
The rules for exponents begin with the rule for multiplying two factors with the same base.
A practical problem is presented that demonstrates a situation in which two variables and a system of equations is the easiest way to reach a solution.
How to write an equation with one variable to solve a practical problem involving rate, time, and distance using a table to help organize the information.
The identity for multiplication is one. It applies to all numbers and to algebraic variables and expressions.
The rule for multiplying two monomials and an example demonstrating its execution.
Multiply a long expression by a monomial by working term-by-term, multiplying each term in the longer expression by the monomial.
Identifying terms within an algebraic expression.
If a rational expression is more complicated, factoring before multiplying might be indicated.
The process of working with a rational expression that contains a quadratic trinomial in the denominator is illustrated.