How would i use the binomial theorem to expand (x+a)^4
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Binomial Expansion $\displaystyle (x+y)^n=\sum_{k=0}^n{n \choose k}x^{n-k}y^{k}\quad\quad\quad(1) $ Applying $\displaystyle (x+a)^4=x^4+4x^3a+6x^2a^2+4xa^3+a^4$
Last edited by I-Think; Sep 3rd 2009 at 07:38 PM.
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