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alamojoe9 Group Title

Where does the graph of y = 2x2 + x − 15 cross the x-axis?

  • 2 years ago
  • 2 years ago

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  1. malexander Group Title
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    is that 2x^2 +x -15 you mean @alamojoe9 ?

    • 2 years ago
  2. alamojoe9 Group Title
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    yes

    • 2 years ago
  3. malexander Group Title
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    if so..its a parabola...Let y = 0 and solve for x...then once you get your two factors, you plug in those numbers into your parabola and that would give you the y for both points...then thats your answer

    • 2 years ago
  4. dpaInc Group Title
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    factor your expression and set to zero: 2x^2 + x -15 = 0 (2x - 5)(x + 3) = 0 solve for x and that's where your graph crosses the x axis.

    • 2 years ago
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