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21 October, 17:59

Solve for x in the equation x squared + 2 x + 1 = 17.

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  1. 21 October, 18:32
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    Step-by-step explanation:

    x^2 + 2x + 1 = 17

    x^2 + 2x = 17 - 1

    x^2 + 2x = 16

    x^2 + 2x + 1 = 16 + 1

    (x + 1) (x + 1) = 17

    (x + 1) ^2 = 17

    x + 1 = sqrt 17

    x = - 1 ( + - ) sqrt 17

    x = - 1 + sqrt 17 or x = - 1 - sqrt 17 <===
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