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4 August, 03:00

X^2 - 18x + 81 = 0 x=?

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  1. 4 August, 05:18
    0
    x = 9

    Step-by-step explanation:

    Solve for x:

    x^2 - 18 x + 81 = 0

    Write the left hand side as a square:

    (x - 9) ^2 = 0

    Take the square root of both sides:

    x - 9 = 0

    Add 9 to both sides:

    Answer: x = 9
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