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13-01-2017
Mathematics

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What is 3 x ( 2 x − 6 ) − ( 5 x + 8 ) + 2 ( 3 x 2 + 4 x )

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13-01-2017

First distribute.
6x^2 - 18x -5x - 8 + 6x^2 + 8x
Combine like terms
12x^2 - 15x - 8

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