Find the sum of the first 20 terms of an arithmetic series if the first term is 10 and the twentieth term is 38.
1 answer:
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Answer:
The correct answer is "x = 4" and "x = -12".
Step-by-step explanation:
The given equation is:
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On subtracting "18" from both sides, we get
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On applying factorization, we get
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On taking common, we get
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or,
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