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3 February, 06:39

Multiply the binomial (3x-2) (3x+2)

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  1. 3 February, 08:01
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    Multiply every term of the left binomial by every term of the right binomial.

    (3x - 2) (3x + 2) =

    = 3x * 3x + 3x * 2 + (-2) * 3x + (-2) * 2

    Do the four multiplications.

    = 9x^2 + 6x - 6x - 4

    Now combine like terms.

    = 9x^2 - 4
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