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Solve the equation x^2-5=11 using the indicated method

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  1. 8 June, 22:38
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    Step-by-step explanation:

    x² - 5 = 11

    add 5 : x² - 5+5 = 11 + 5

    x² = 16

    x² - 4 ² = 0

    (x-4) (x+4) = 0

    x - 4 = 0 or x + 4 = 0

    x = 4 or x = - 4
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