Adding and Subtracting Rational Expressions Explained

What should students focus on as the semester ends?

• Relaxing and taking time off

• Planning for next semester

• Completing pending assignments

• Starting new assignments

What is necessary to add or subtract rational expressions?

• Common denominators

• Numerical coefficients

• Variable exponents

• Different denominators

What happens to the denominator when adding rational expressions with common denominators?

• It remains unchanged

• It is multiplied

• It is factored

• It is eliminated

How do you simplify the expression 15x + 5?

• Factor out x

• Factor out 5

• Add 5 to each term

• Divide each term by 5

What is the first step when you encounter a subtraction sign in rational expressions?

• Combine the numerators

• Change the subtraction to addition

• Factor the denominator

• Simplify the expression

What do you do with the minus sign in a subtraction problem involving rational expressions?

• Ignore it

• Distribute it across the numerator

• Multiply it by the denominator

• Eliminate it from the expression

After converting a subtraction problem into an addition problem, what is the next step?

• Combine like terms

• Factor the denominator

• All of the above

• Simplify the numerator

How do you simplify the expression 2x + 6 when factoring?

• Divide each term by x

• None of the above

• Pull out a GCF of 2

• Add 2 to each term

What is the result of simplifying the expression with a common factor in the numerator and denominator?

• A new rational expression

• A simplified integer

• An unchanged expression

• A complex number

What should you do after factoring the top and bottom of a rational expression?

• Check for common factors to simplify

• Rewrite the expression

• Combine like terms

• Start over