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DanielleElmas [232]
3 years ago
5

−3y^2 + 7y + 20 HELP

Mathematics
1 answer:
olchik [2.2K]3 years ago
7 0
<span>−3y^2 + 7y + 20
-(3y^2-7y-20)

(y-4)(3y+5)
</span>
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Answer:

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Step-by-step explanation:

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4th term is obtained by multiplying the 3rd term by 2.

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Common Ratio, r = 2

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a_n = ar^{n-1}

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a_n = \dfrac{1}{4}2^{n-1}\\a_n = \dfrac{1}{2^{2} }2^{n-1}\\a_n = 2^{n-1-2}\\a_n = 2^{n-3}

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