What is (7r - 1)(8r^2 + 8r + 1)

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asked Mar 9, 2017 110k views

2 votes

What is (7r - 1)(8r^2 + 8r + 1)

Mathematics
middle-school

Injeniero Barsa asked

by Injeniero Barsa

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1 Answer

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(7r - 1)(8r² + 8r + 1)

7r*(8r² + 8r + 1) - 1*(8r² + 8r + 1)

56r³ + 56r² + 7r - 8r² - 8r - 1

56r³ + 56r² - 8r² + 7r - 8r - 1

56r³ + 48r² - 8r² - r - 1

IShubhamPrakash answered Mar 15, 2017

by IShubhamPrakash

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