What is the sum of the first five terms of the geometric series 2 − 8 + 32 − . . . ?
Sum =F x (1 - R^N) / (1 - R)
Sum =2 x (1 -(-4)^5) / (1 - (-4))
Sum =2 x (1 - (-1024)) / (1 +4)
Sum =2 x (1,025) /(5)
Sum = 2,050 / 5
Sum= 410
