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17 March, 17:17

What is the product of (9+x) (9-x)

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  1. 17 March, 19:35
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    81 - x^2

    Step-by-step explanation:

    this is a "special product," namely, the product of the sum and the difference of quantities 9 and x.

    The product is the difference of two squares:

    (9 + x) (9 - x) = 81 - x^2
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