Adding and Subtracting Rational Expressions Explained

What is required to add or subtract rational functions?

• Different denominators

• Denominators must be even

• Like denominators

• Numerators must be prime numbers

Tags

CCSS.HSA.APR.D.7

What is the result of adding 7/4x to 3/4x?

• 10/4x

• 10/8x

• 4x/10

• 1/4x

Tags

CCSS.HSA.APR.D.7

Can 2x - 5 be simplified further when subtracting rational functions with like denominators?

• Yes, it simplifies to -3x

• No, because they involve different terms

• No, because they are already in simplest form

• Yes, it can be simplified to 2x

Tags

CCSS.HSA.APR.D.7

What do you do when rational functions have unlike denominators?

• Multiply the denominators

• Only use the numerators

• Find a common denominator

• Ignore the denominators

Tags

CCSS.HSA.APR.D.7

How do you find a common denominator for c/d + e/f?

• Add c and e

• Multiply d and f

• Multiply c and f

• Multiply c and d

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the first step in adding rational functions with unlike denominators?

• Add the numerators directly

• Find the least common multiple of the denominators

• Factor the denominators

• Simplify the numerators

Tags

CCSS.HSA.APR.D.7

In the expression x/6 + 4/(x+2), what must be done to add these fractions?

• Multiply the denominators

• Find a common denominator

• Subtract the denominators

• Add the numerators first

Tags

CCSS.HSA.APR.D.7

What is the result of factoring x^2 + 5x - 24?

• (x + 8)(x - 3)

• (x + 6)(x - 4)

• (x + 3)(x - 8)

• (x - 5)(x + 4)

What signifies the end of simplifying a rational function?

• When no further factoring is possible

• When the numerator is a prime number

• When the denominator equals zero

• When the numerator and denominator are equal

Tags

CCSS.HSA.APR.D.6

After finding a common denominator, what is the next step?

• Simplify the denominator only

• Multiply the numerator by the denominator

• Divide the numerator by the denominator

• Combine like terms in the numerator

Tags

CCSS.HSA.APR.D.7