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Study Guide

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We multiply and divide rational expressions just like fractions. Waitâ€”is this thing on repeat? To multiply rational expressions, first factor all numerators and denominators and cancel any factors you can. Then multiply what you have left. To divide, simply flip the divisor (the term you're dividing by) and then multiply. In math-speak, it's called multiplying by the reciprocal of the divisor. Yikes.

Multiply by .

Factor your numerators and denominators as much as you possibly can.

Next, cancel where possible.

And the answer is:

Not too awful, right?

Multiply by .

Break everything down into factors. Don't hold back.

Cancel like factors.

Which gives us:

Simplify .

First flip the divisor over and multiply.

Now factor the numerators and denominators.

Cancel like factors.

And we get:

Divide by .

Flip the divisor over and multiply.

Factor the numerators and denominators.

Go on a huge canceling spree.

Then keep all the leftover stuff to get our final answer:

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