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# C4: Partial Fractions help please? watch

1. https://youtu.be/pOH13db9qi0?t=5m41s

I know this is pretty basic stuff but could someone explain why on the numerator he gets and not and so on?
2. (Original post by AxSirlotl)
https://youtu.be/pOH13db9qi0?t=5m41s

I know this is pretty basic stuff but could someone explain why on the numerator he gets and not and so on?
Because theres already an (x-2) in the denominator, so you have to multiply top and bottom by a factor (same as multiplying by 1) that makes the common denominator essentially.
3. The first term is:

To place over a common denominator:

we need:

Does this help? :-)
4. (Original post by NotNotBatman)
Because theres already an (x-2) in the denominator, so you have to multiply top and bottom by a factor (same as multiplying by 1) that makes the common denominator essentially.
(Original post by simon0)
The first term is:

To place over a common denominator:

we need:

Does this help? :-)
Ok thanks, I think I understand now

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