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24 February, 13:27

Explaining step by step the simplest form of the expression 9r (r+3) - 2r (r-4)

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  1. 24 February, 14:44
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    For simplest form, the first thing you'll want to do is get rid of the parentheses:

    9r (r + 3) - 2r (r - 4) = 9r^2 + 27r - 2r^2 + 8r

    Now we want to combine like terms:

    9r^2 + 27r - 2r^2 + 8r = 7r^2 + 35r
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