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15 November, 14:47

What are the solutions of the equation x^2-1=15

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  1. 15 November, 16:41
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    Answer: x = + 4 or - 4

    Step-by-step explanation:

    x² - 1 = 15

    x² = 15 + 1

    x² = 16

    Therefore, to solve for x we take the square root of both side

    √x² = + / -√16

    x² = + / -4

    so, x = + 4 or - 4
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