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If an = n(n+2), what is a9? 20 99 108 120
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If an = n(n+2), what is a9? 20 99 108 120
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Dec 24, 2019
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If an = n(n+2), what is a9?
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120
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Aloisdg
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an = n(n+2)
⇒ a9 = 9(9+2) = 9 × 11 = 99
AdRock
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Dec 24, 2019
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Mamykin Andrey
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