The sum of a geometric sequence to calculate

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Reference no: EM13687697

Use the formula for the sum of a geometric sequence to calculate:
4+4^2+4^3+?+4^n,where n is an integer ≥1
HINT: 4+4^2+4^3+?+4^n = 4·(1+4+4^2+?+4^(n-1) )

Reference no: EM13687697

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