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10 February, 18:22

A rectangle with an area of x2 - 4x - 12 square units is represented by the model. What side lengths should be used to model the rectangle?

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  1. 10 February, 18:48
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    We would factor this

    what 2 numbers multiply to get - 12 and add to get - 4?

    -6 and 2

    (x-6) (x+2)

    the side lengths are (x-6) and (x+2)
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