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11 December, 10:14

What equation is equivalent to 2r^2-28r+38

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  1. 11 December, 10:34
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    2r² - 28r + 38 = 0

    2 (r² - 14r) = - 38

    2 (r² - 14r + 49) = - 38 + 2 (49)

    2 (r - 7) ² = 60

    (r - 7) ² = 30

    the answer is 2 (r-7) ² = 60
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