# Binomial expansion

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• February 8th 2009, 10:26 AM
Beard
Binomial expansion
Is this the correct expansion $(2 - x)^{-1} = \frac{1}{2} + x + \frac{x^2}{4}$
• February 8th 2009, 10:46 AM
red_dog
No.

$(2-x)^{-1}=\frac{1}{2-x}$
• February 8th 2009, 10:51 AM
Beard
I mean when you expand it up to x^2 using binomial expansion