Solving Rational Equations and Checking for Extraneous Solutions

What is a rational expression?

• A difference of two polynomial expressions

• A ratio of two polynomial expressions

• A product of two polynomial expressions

• A sum of two polynomial expressions

What happens when you substitute x = 2 into the equation x + 2 over x - 3 equals 3x - 2 over x?

• The equation becomes undefined

• The solution is extraneous

• The equation is satisfied

• The solution is valid

Why is dividing by zero not possible?

• It results in a negative number

• It results in an undefined expression

• It results in a zero

• It results in a positive number

What is the least common denominator used for in solving rational equations?

• To divide fractions

• To multiply fractions

• To simplify the equation

• To add fractions

What is the solution to the rational equation when x equals negative 3 and 75/100?

• The solution is undefined

• The solution is valid

• The solution is extraneous

• The solution is zero