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20 September, 17:02

Solve the quadratic equation.

(x - 5) 2 = 9

+2
Answers (1)
  1. 20 September, 18:12
    0
    (x - 5) ^2 = 9

    (x - 5) (x - 5) = 9

    x^2 - 10x + 25 = 9

    x^2 - 10x + 25 - 9 = 0

    x^2 - 10x + 16 = 0

    (x - 8) (x - 2) = 0

    x - 8 = 0

    x = 8

    x - 2 = 0

    x = 2

    solution : x = 8 and x = 2
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