Quiz on Subtracting Rational Expressions

What is the first step when subtracting rational expressions?

• Divide the fractions

• Add the denominators

• Find a common denominator

• Multiply the numerators

When factoring a trinomial, what is the purpose of finding two numbers that multiply to the last term and add to the middle term?

• To eliminate the variables

• To determine the factors of the trinomial

• To simplify the expression

• To find the least common multiple

What is the least common denominator (LCD) used for in rational expressions?

• To add the numerators

• To ensure the denominators are the same

• To divide the fractions

• To multiply the expressions

Why do we multiply the numerator and denominator by the same term when adjusting fractions?

• To eliminate variables

• To change the value of the fraction

• To simplify the expression

• To keep the fraction equivalent

What should you do after obtaining a common denominator in rational expressions?

• Subtract or add the numerators

• Multiply the fractions

• Add the denominators

• Divide the numerators