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17 January, 20:03

What are the x-intercepts of the graph of the function below?

y = x^2+3x - 28

A. (7,0) and (4,0)

B. (-7,0) and (-4,0)

C. (7,0) and (-4,0)

D. (-7,0) and (4,0)

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Answers (2)
  1. 17 January, 21:31
    0
    Y = x^2 + 3x - 28

    y = x^2 + 7x - 4x - 28

    y = (x^2 + 7x) - (4x - 28)

    y = x (x + 7) - 4 (x + 7)

    y = (x + 7) (x - 4)

    y = - 7, 4

    The answer is D. (-7, 0) and (4, 0)
  2. 17 January, 21:37
    0
    The answer to your question is D.
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