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17 September, 17:49

If the area of Bianca's rectangular backyard patio is represented by the expression x2-18x + 81, and the length of the patio is represented by the expression x-9, what is the expression for the width of the patio and what special rectangular shape is the patio? Explain and show all work when factoring.

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  1. 17 September, 21:24
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    a square backyard with width (x - 9)

    Step-by-step explanation:

    x²-18x + 81 = x² - (2 x 9) x + 9² = (x - 9) ²

    width = area / length = (x - 9) ² / (x - 9) = x - 9

    Length = width

    This is a square backyard
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