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7 February, 04:44

X2 - 12x + 27 = 0 Solutions: x = and x =

+4
Answers (2)
  1. 7 February, 05:26
    0
    Step-by-step explanation: x = 9

    x = 3

    Step by step solution:

    Step 1:

    Trying to factor by splitting the middle term

    1.1 Factoring x2-12x+27

    The first term is, x2 its coefficient is 1.

    The middle term is, - 12x its coefficient is - 12.

    The last term, "the constant", is + 27

    Step-1 : Multiply the coefficient of the first term by the constant 1 • 27 = 27

    Step-2 : Find two factors of 27 whose sum equals the coefficient of the middle term, which is - 12.

    -27

    +

    -1

    =

    -28

    -9

    +

    -3

    =

    -12

    That's it
  2. 7 February, 07:57
    0
    Step-by-step explanation:

    x² - 12x + 27 = 0

    x² - 9x - 3x + 9*3 = 0

    x (x-9) - 3 (x - 9) = 0

    (x-9) (x-3) = 0

    x - 9 = 0; x - 3 = 0

    x = 9; x = 3

    x = 9 or 3
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