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$1+m+m^{2}+m^{3}+...+m^{n-1}={\dfrac {m^{n}-1}{m-1}}$

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	[[File:Sum_of_Geometrical_Progression.png]]		[[File:Sum_of_Geometrical_Progression.png]]

	<math>1 + m + m^2 + m^3 + ... + m^{n-1} = \~~frac~~{m^n-1}{m - 1}</math>		<math>1 + m + m^2 + m^3 + ... + m^{n-1} = \dfrac{m^n-1}{m - 1}</math>