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jasenka [17]
2 years ago
12

Please help someone

Mathematics
1 answer:
Marrrta [24]2 years ago
8 0

Answer:

the answer is B. and C.

Step-by-step explanation:

set the equation to 0 and solve for x:

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Which expression is equivalent to *picture attached*
Sedbober [7]

Answer:

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Step-by-step explanation:

Given expression : \sum_{n=3}^{20}(n(n+1))

Solving further :

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So, \sum_{n=3}^{20}(n(n+1))=\sum _{n=3}^{20} n^2+ \sum _{n=3}^{20} n

So, The given expression is equivalent to Option A

So, Option A is the answer

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3 years ago
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