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Divide.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Divide.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,-example-1
User Thoean
by
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1 Answer

6 votes
It's not clear whether the problem is to:

(1) divide
x^2-4 by
(x-8)/(x-2), or

(2) divide
(x^2-4)/(x-8) by
x-2.

But with only two possible cases, that's not much work to do.


\drac{x^2-4}{(x-8)/(x-2)}=((x^2-4)(x-2))/(x-8)=(x^3-2x^2-4x+8)/(x-8)

Synthetic division yields a quotient and remainder of
x^2+6x+44+(360)/(x-8) (see attachment for how the algorithm was carried out).

In the other case,


((x^2-4)/(x-2))/(x-8)=(((x-2)(x+2))/(x-2))/(x-8)=(x+2)/(x-8)

provided that
x\\eq2. Synthetic division can be used again here, but this is quite easy to deal with by just doing some easy manipulation of the numerator:


(x+2)/(x-8)=(x-8+10)/(x-8)=(x-8)/(x-8)+(10)/(x-8)=1+(10)/(x-8)

(also provided that
x\\eq 8)
Divide.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,-example-1
User Luca Ziegler
by
8.5k points

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