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5 August, 15:43

What is the simplest form of (3x+20) ²

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  1. 5 August, 17:43
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    Step-by-step explanation:

    (3x+20) ² is the same as

    (3x+20) (3x+20)

    you need to have for different numbers

    SO

    3x*3x is 9x²

    3x*20 is 60x

    20*3x is also 60x

    20*20 is 400

    put it together

    9x²+60x+60x+400

    simplify to

    9x²+120x+400
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