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18 April, 14:59

Completing the sqaure

x^2+14x+34

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Answers (1)
  1. 18 April, 15:56
    0
    -7-√15

    Step-by-step explanation:

    First move the constant to the right hand side and change it's sign

    x^2+14x=-34

    Then add (14/2) ^2 or 7^2 to both sides

    x^2+14x+49=-34+49

    Then factor the expression

    (x+7) ^2=-34+49

    Then solve (x+7) ^2=15

    You should get:

    x=-√15-7

    or

    x=√15-7
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