Add and Subtract Rational Expressions

Presentation

•

Mathematics

•

8th - 9th Grade

•

Hard

James Gonzalez

FREE Resource

5 Slides • 4 Questions

Add and Subtract Rational Expressions

by Ashley Dugas

Multiple Choice

What would be the common denominator for this expression?

$3a$

$2$

$6a$

$5a$

When in doubt...

Multiply the denominators to create a common denominator

Multiple Select

What would be the common denominator for this expression?

$6b^2$

$2b$

$6b$

$2b^2$

Which is best?

When in doubt, take the product of the two denominators. You can always simplify later.

Work smart! Stop and see if the expressions can be simplified before working.

Multiple Choice

What would be the common denominator for this expression?

$2x^2$

$2x$

$2x+1$

Doesn't exist

Rewrite Fractions

Any constant or term can be written with a denominator of 1.

Then to find the common denominator, multiply the original denominators.

Multiple Choice

What would be the common denominator for this rational expression?

$z$

$z\left(z+2\right)$

$z^2+2$

$z^2$

When in doubt...

Multiply the denominators to create a common denominator

HINT! Leave denominator in factored form! It makes it easier to simplify if need be.

Add and Subtract Rational Expressions

by Ashley Dugas

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Add and Subtract Rational Expressions

Add and Subtract Rational Expressions

​When in doubt...

​Multiply the denominators to create a common denominator

​Which is best?

​Rewrite Fractions

​When in doubt...

​Multiply the denominators to create a common denominator

Add and Subtract Rational Expressions

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

When in doubt...

Multiply the denominators to create a common denominator

Which is best?

Rewrite Fractions

When in doubt...

Multiply the denominators to create a common denominator