Standard Form of a Linear Equation
The standard form for a linear equation is detailed.
Practical Problem: Find Travel Speed
In a practical illustration, travel speed is calculated using two ordered pairs.
Practical Problem: Furniture Salesperson Earnings
Using the slope-intercept form to solve a practical problem involving calculating earnings.
Square Root of a Product, The
Illustrations of the rule for multiplying radicals: the square root of a times the square root of b equals the square root of the product a times b.
Factor: 5c2 3c - 20cd - 12d
Practice factoring: 5c2 3c - 20cd - 12d.
Simplifying Rational Expressions
Simplifying rational expressions is like reducing rational numbers. First fully factor the numerator and denominator and then cancel all the common factors. The process is illustrated step by step.
Rational Expressions that Equal - 1
Rational expressions that equal -1 are recognizable: the terms in the numerator are identical to the terms in the denominator except for their signs, which are opposite.
Factor: ax - x - 5a 5
Practice with factoring involving minus signs: ax - x - 5a 5.
Review of Multiplication
A review of how to multiply signed numbers.
Rules for Working with Rational Expressions
Most of the rules for working with rational expressions are the same as the rules for working with rational numbers.