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3 February, 09:35

Select all expressions that are equivalent to (2n+6) (n+3)

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  1. 3 February, 11:34
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    (2n+6) (n+3) =

    (2*n+2*3) (n+3) =

    2 (n+3) (n+3) = ... (1)

    2 (n+3) ^2 = ... (2)

    2 (n^2+2*n*3+3^2) =

    2 (n^2+6n+9) = ... (3)

    2n^2+2*6n+2*9=

    2n^2+12n+18 ... (4)
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