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Find the sum of the first 30 terms of the following series, to the nearest integer.
2, 8, 14, ...

Sagot :

Answer:

a= 2

d= 6

n=30

sum= n/2[2a+(n-1)x d]

30/2[ 2x2 + (30-1) x 6]

15 [ 4 +29 x6]

15x 178

= 2670

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