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JocelynHernandez Group Title

How would you describe the roots of a quadratic equation?

  • one year ago
  • one year ago

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  1. JocelynHernandez Group Title
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    Like: \[\frac{ -3\pm \sqrt{17} }{ 4 }\]

    • one year ago
  2. mathmate Group Title
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    Graphically, they (real zeroes) cross the x-axis. If the zeroes are complex, they do not touch the x-axis.. Numerically, the roots, x1 and x2, have the property that f(x1)=0 and f(x2)=0, where f(x)=0 is the quadratic equation.

    • one year ago
  3. rizwan_uet Group Title
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    |dw:1358090824515:dw|

    • one year ago
  4. rizwan_uet Group Title
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    |dw:1358090914575:dw|

    • one year ago
  5. rizwan_uet Group Title
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    the roots describe the values of x for which the required quadratic function's value is zero.

    • one year ago
  6. hba Group Title
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    Actually we use the discriminant to determine, \[\huge\ D=b^2-4ac\]

    • one year ago
  7. JocelynHernandez Group Title
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    @hba Thats what i got as the discriminant

    • one year ago
  8. hba Group Title
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    \[b^2-4ac>0,two \ real \ solutions\]\[b^2-4ac=perfect \ squar e ,Two \ real \ rational \ solutions\]

    • one year ago
  9. hba Group Title
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    If, \[b^2-4ac= no \ perfect \ sq uare,Two \ real \ irrational \ solutions\]

    • one year ago
  10. hba Group Title
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    \[b^2-4ac=0,One \ real \ solution\]

    • one year ago
  11. hba Group Title
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    \[b^2-4ac<0,No \ real \ but \ two \ imaginary \ solutions\]

    • one year ago
  12. JocelynHernandez Group Title
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    Thanks! @hba

    • one year ago
  13. hba Group Title
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    You are welcome :)

    • one year ago
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