(a^n)-1

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Mar25-09, 07:59 AM	#1
crazyformath2 crazyformath2 is Offline: Posts: 14	(a^n)-1 Can someone help me. How would I expand (a^n)-1 and is there a theorem for this? aⁿ-1

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Mar25-09, 10:30 AM	#2
tiny-tim tiny-tim is Online: Posts: 9,279 Blog Entries: 27 Recognitions: PF Contributor Homework Helper Science Advisor	Hi crazyformath2! aⁿ - 1 = (a - 1)(a^n-1 + a^n-2 + … + 1)

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