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19 November, 11:45

Ive been told to solve this equation but i have no clue!

x^2 - 12x + 2 = 0

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Answers (1)
  1. 19 November, 12:02
    0
    To solve this equation simply move the 2 to other side and compete the square.

    x^2 - 12x + 2 = 0

    X^2 - 12x + 2 - 2 = 0 - 2

    X^2 - 12x - _ = - 2

    Fill in the blank with a number that makes the trinomial have 2 binomial expressions that are same when factored, in this case 36. And after adding 36 to one side do it also to the other side as well.

    X^2 - 12x + 36 = - 2 + 36

    (X-6) (X-6) = 34

    (X-6) ^2 = 34

    (X-6) = + sq root of 34

    X - 6 + 6 = + sq. root of 34 + 6

    X = + sq root 34 + 6

    X = - sq root 34 + 6

    I believe these are the solutions.
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