Jere9duraganabito5 Jere9duraganabito5

28-10-2016
Mathematics

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What is the a3+b3 equal to? verify by an activity

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HomertheGenius HomertheGenius

03-11-2016

a³ + b³ = ( a + b ) ( a² - a b + b³ )
For example:
a = 1, b = 2
a³ + b³ = 1³ + 2³ = 1 + 8 = 9
( a + b ) ( a² - a b + b² ) = ( 1 + 2 ) ( 1² - 1 * 2 + 2² ) =
= 3 * 3 = 3
The formula is true.

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