The sum
of first in terms of series. a, 3a,5a
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Answered by
1
Answer:
The sum of first in terms of series : 9a
Answered by
1
Answer:
an²
Step-by-step explanation:
n/2[2a + (n-1)d]
d = 2a
n/2[2a + (n-1)2a]
n/2[2a + 2an - 2a]
2an²/2
an²
hope it helps you
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