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24 April, 10:32

What is the solution of X2-9x+18=0

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Answers (1)
  1. 24 April, 10:46
    0
    X² - 9x + 18 = 0

    x = - (-9) + / - √ ((-9) ² - 4 (1) (18))

    2 (1)

    x = 9 + / - √ (81 - 72)

    2

    x = 9 + / - √ (9)

    2

    x = 9 + / - 3

    2

    x = 4.5 + 1.5

    x = 4.5 + 1.5 x = 4.5 - 1.5

    x = 6 x = 3
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