Vocabulary
Cross Multiplying- A method for solving a simple rational equation for which each side of the equation is a single rational expression.
Extraneous solution- An apparent solution that must be rejected because it does not satisfy the original equation.
Extraneous solution- An apparent solution that must be rejected because it does not satisfy the original equation.
Essential Information
Cross multiplying can be used to solve a rational equation when each side of the equation is a single rational expression.
Using LCDS
When a rational equation is not expressed as a proportion, you can solve it by multiplying each side by the least common denominator of each rational expression.
When a rational equation is not expressed as a proportion, you can solve it by multiplying each side by the least common denominator of each rational expression.
Extraneous Solutions
When solving a rational equation, solutions may be obtained that are extraneous. Check for extraneous solutions by substituting back into the original equation.
When solving a rational equation, solutions may be obtained that are extraneous. Check for extraneous solutions by substituting back into the original equation.