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23 February, 23:37

Which of the following are solutions to the equation below? Check all that apply. 4x^2 + 12x + 9 = 25

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  1. 23 February, 23:56
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    Answer: 1 or - 4
  2. 23 February, 23:56
    0
    x = 1 or - 4

    Step-by-step explanation:

    4x² + 12x + 9 = 25

    4x² + 12x + 9 - 25 = 0

    4x² + 12x - 16 = 0

    Dividing by 4 throughout gives;

    x² + 3x - 4 = 0

    Applying the quadratic formula you get;

    x = 1 or - 4
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