Suppose a is a positive integer. Simplify the expression a Σ((n + 2)³ + n³ - 2(n+1)³). n=1 [Explain in words what you are doing at each step. Your answer should not involve a sum, and your method should not involve evaluating a sum.]

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter8: Polynomials
Section8.2: Multiplying A Polynomial By A Monomial
Problem 52PFA
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Suppose a is a positive integer. Simplify the expression
a
Σ ((n + 2)³ + n³ - 2(n+1)³).
n=1
[Explain in words what you are doing at each step. Your answer should not involve a sum, and your
method should not involve evaluating a sum.]
Transcribed Image Text:Suppose a is a positive integer. Simplify the expression a Σ ((n + 2)³ + n³ - 2(n+1)³). n=1 [Explain in words what you are doing at each step. Your answer should not involve a sum, and your method should not involve evaluating a sum.]
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