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anonymous

  • one year ago

Use the discriminant to determine how many x-intercepts the graph of the equation has. y = – 4x2 + 3x – 2 A. three B. one C. two D. none

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  1. anonymous
    • one year ago
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    @DecentNabeel

  2. anonymous
    • one year ago
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    inst it A

  3. ChillOut
    • one year ago
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    All right, so the discriminant of a quadratic equation of form ax²+bx+c is given by \(\Delta=b^{2}-4ac\)

  4. anonymous
    • one year ago
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    i'm getting three as the answer.

  5. anonymous
    • one year ago
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    @DecentNabeel ? what do you think

  6. LynFran
    • one year ago
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    none

  7. anonymous
    • one year ago
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    is she correct @DecentNabeel ?

  8. anonymous
    • one year ago
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    well i need proof

  9. anonymous
    • one year ago
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    hld on help me with 2 more and i will give you the medals

  10. LynFran
    • one year ago
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    check the graph at the bottom of this link https://www.symbolab.com/solver/trigonometric-equation-calculator/-4x%5E%7B2%7D%2B3x-2%3D0/?origin=enterkey

  11. ChillOut
    • one year ago
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    All right. Here's the thing. If the discriminant is over 0, it has 2 roots. If it's 0, one root. And below 0, complex roots.

  12. ChillOut
    • one year ago
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    As your discriminant is over 0, it should have 2 roots (x intercepts).

  13. ChillOut
    • one year ago
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    Oh, nevermind. I just did the calculation and it yields -23. So there are no real roots.

  14. anonymous
    • one year ago
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    you were right @LynFran

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spraguer (Moderator)
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