Rational Expressions and Operations

What is the first step in simplifying a rational expression?

• Subtract the numerators

• Multiply the denominators

• Factor the terms

• Add the numerators

In the keep-change-flip method, what do you do after flipping the second fraction?

• Divide the fractions

• Add the fractions

• Multiply the fractions

• Subtract the fractions

When adding rational expressions with common denominators, what should you do with the numerators?

• Subtract them

• Divide them

• Add them

• Multiply them

What is the common denominator for the expressions 5x^2 and 15x^3?

• 5x^2

• 15x^3

• 15x^2

• 5x^3

How do you handle subtraction in rational expressions with different denominators?

• Add the numerators directly

• Subtract the denominators

• Find a common denominator first

• Multiply the denominators

What is the first step in finding a common denominator for rational expressions with binomials?

• Subtract the binomials

• Add the binomials

• Multiply the binomials

• Factor each binomial

What is an excluded value in a rational expression?

• A value that makes the numerator zero

• A value that makes the denominator zero

• A value that makes the expression undefined

• A value that makes the expression equal to one

What should you do if the numerator of a rational expression can be factored?

• Add it to the denominator

• Multiply it by the denominator

• Factor it and check for cancellations

• Ignore it

How do you simplify the expression 2/(x-3) - 8/(3-x)?

• Subtract the numerators directly

• Multiply the denominators

• Add the numerators directly

• Factor out a negative one from the second term

What is the result of subtracting 4x from 3x?

• -x

• 0

• 7x

• x