Use the Geometric Series Formula to Find the Sum Of $\ {a}+ {a^2} + {a^3} + {a^4}$

question 55

Multiple Choice

Use the geometric series formula to find the sum of $\ {a}+ {a^2} + {a^3} + {a^4}$ [Hint: The series does not begin with 1.]

• A) \(\frac { ( a ) ^ { 4 } - 1 } { (a ) - 1 }\)
• B) \(\frac {{a}^{5} - 1 } { {a} - 1 }\) -1
• C) \(\frac { a ^ { 5 } - 1 } { a - 1 }\)
• D) \(4a^{4}\)

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