Subtracting Rational Expressions

Presentation

•

Mathematics

•

10th - 12th Grade

•

Easy

•

CCSS

HSA.APR.D.7

Standards-aligned

LaShawne Long Myles

Used 6+ times

FREE Resource

5 Slides • 3 Questions

Subtracting Rational Expressions

We follow the same rules for adding rational expressions except...

The signs in the numerator of the second expression will change.
We have to focus oncombining like terms and not just adding and subtracking.

Let's look at an example of subtraction!

Take note of what Sal does in the video!

https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:rational/x2ec2f6f830c9fb89:rational-add-sub-intro/v/subtracting-rational-expressions-w-unlike-denominators

Multiple Choice

In oreder to subtract the rational expressions we must have a...

extensive denominator

uncommon denominator

common denminator

Multiple Choice

If the binomials of the denominators of rational expressions have no common factor in order to find the common denominator it's best to just...

add the two binmials

subtract the two binomials

multiply the two binomials

divide the two binomials

Open Ended

What does Sal make the 6x^3 negative? What would be the alternative?

Type response here

Now it's your turn!

Try solving the problem on your own!

Let's look at the solution.

Subtracting Rational Expressions

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