Home Forums Math For what values of x is x^2 + 2x = 24 true?

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    A) –6 and –4
    B) –4 and 6
    C) 4 and –6
    D) 6 and 4

    #10975
    hemanthk
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      Answer: C) 4 and -6

      Given,
      =>x^2 + 2x = 24
      =>x^2 + 2x – 24 = 0
      =>x^2 + 2x – 24 –> (x-4)(x+6)

      now equations (x-4)(x+6) = 0
      x-4=0, x+6=0
      x=4, x=-6

      So answer is C.
      You can also solve by inserting the x values individually in the given equation.

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