‘O’ Level Emaths

‘O’ Level Emaths

(x+a)^{n}=\sum_{k=0}^{n}{\binom{n}{k}x^{k}a^{n-k}}\\

(1+x)^{n}=1+\frac{nx}{1!}+\frac{n(n-1)x^{2}}{2!}+\ldots\\

v=\frac{1}{255}(20-t)^{3} for 5\le t\le T <br />

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