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9 January, 22:59

Which of the following is not performed when solving r^2+12r-6=0 by

completing the square?

(A) Add 6 to each side,

(B) Factor p + 12r - 6.

(C) Add 36 to each side.

(D) Take the square root of each side.

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Answers (2)
  1. 9 January, 23:48
    0
    B.) why Factor p + 12r - 6, I did not do that below.

    Step-by-step explanation:

    r^2+12r-6=0

    solve:

    r^2 + 12 r + 36 - 36 - 6 = 0

    factor the trinomial by completing the square.

    (r + 6) ^2 - 42 = 0

    (r + 6) ^2 = 42

    r + 6 = root (42) or r + 6 = - root (42)

    r = - 6 + root (42) or r = - 6 - root (42)
  2. 10 January, 00:01
    0
    Answer is.) B) factor p + 12r - 6
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