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14 April, 12:09

12 (x^2-x-1) + 13 (x^2-x-1) = 25 (x^2-x-1)

What does x equal?

+1
Answers (2)
  1. 14 April, 13:59
    0
    X equals all real numbers
  2. 14 April, 14:29
    0
    x = any real number

    Step-by-step explanation:

    12 (x^2-x-1) + 13 (x^2-x-1) = 25 (x^2-x-1)

    Combine like terms on the left side

    The items inside the parentheses are identical so

    25 (x^2-x-1) = 25 (x^2-x-1)

    Subtract 25 (x^2-x-1) from each side

    25 (x^2-x-1) - 25 (x^2-x-1) = 25 (x^2-x-1) - 25 (x^2-x-1)

    0=0

    This is always true, so x can be any real number
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