9. For n positive integer, prove the following using the first principle of math. induction 2 + 6 + 18 + +2.3n-1 = 3" - 1

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9. For n positive integer, prove the following using the first principle of math. induction
2 + 6 + 18+
+2·3n-1 =3" - 1
Transcribed Image Text:9. For n positive integer, prove the following using the first principle of math. induction 2 + 6 + 18+ +2·3n-1 =3" - 1
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