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Rationals watch

1. I have a question to multiply 2 rationals to form one, but the answer i get seems to be wrong

4/(x-2) and 6/(x+8)

It says there is no need to multiply out the denominator so i get:

24 / ((x-2)(x+8))

How have i done this wrong?
2. It is not wrong.
3. (Original post by Carlo08)
I have a question to multiply 2 rationals to form one, but the answer i get seems to be wrong

4/(x-2) and 6/(x+8)

It says there is no need to multiply out the denominator so i get:

24 / ((x-2)(x+8))

How have i done this wrong?
That is clearly correct. What made you think it was wrong?
4. We get given weekly tests online (The idea is to get us to practice) and it keeps teling me it's wrong.
5. (Original post by Carlo08)
We get given weekly tests online (The idea is to get us to practice) and it keeps teling me it's wrong.
There is a mistake with this question on the test then.
6. The only other thing I can see that you might try is to FOIL the bottom to get a polynomial, but the work you have there is correct.
7. Ok thanks for the help, the next one is talking about adding them, how do i find the lcd of the equations listed above?
8. The common denominator is (x-2)(x+8). Multiply each fraction by whatever part of this common denominator that fraction does not already have.
9. How do you mean?

10. edit: From there it's a matter of distributing what needs distributing, combining like terms, foiling what needs foiling, canceling things that can be canceled, and you have it.

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Updated: November 9, 2008
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