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Multiply the rational expression: 12f -16/ 16 divided by 5/9f^2 - 16

User Doc Roms
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1 Answer

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It would help if you'd please use parentheses to indicate clearly what is to be multiplied or divided by what.

I am assuming (not claiming that I know) you meant:

(12f-16) (5)
------------ divided by --------------
16 9f^2 - 16

Factor as much as possible before attempting division:

4(3f-4) 5
--------- divided by -----------------
16 (3f-4)(3f+4)

This is equivalent to multiplying as follows:

4(3f-4) (3f-4)(3f+4)
---------- * -----------------
16 5

Is this what you meant? If so, please finish the work. If not, please copy down the original problem making liberal use of parentheses for clarity.
User Chefjuanpi
by
7.5k points

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