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miah

Solve. 3x2 – 7x – 2 = 0

  • one year ago
  • one year ago

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  1. jhonyy9
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    do you know how you can solving a quadratic ?

    • one year ago
  2. jhonyy9
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    us formula of discriminant

    • one year ago
  3. jhonyy9
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    D = b^2 -4ac

    • one year ago
  4. jhonyy9
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    so you dont know it how ?

    • one year ago
  5. miah
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    no

    • one year ago
  6. shreya.
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    \[3x^{2}-7x-2=0\] Use the formula that jhonyy9 gave to calculate the Discriminant \[D=b^{2}-4ac\] now use the quadratic formula which is \[\frac{ -b \pm \sqrt{D} }{ 2a }\] where a=3 b=-7 and c=-2

    • one year ago
  7. miah
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    uhm ?

    • one year ago
  8. shreya.
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    we use these formula's to solve the quadratic equations - \[ax^{2}+bx+c=0\]

    • one year ago
  9. miah
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    I have no idea how to do it

    • one year ago
  10. shreya.
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    \[x=\frac{-b \pm \sqrt{D} }{ 2a }\]

    • one year ago
  11. shreya.
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    just put the values. first to calculate D and then in the above formula.

    • one year ago
  12. miah
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    is the answer \[x=\frac{ 7\pm \sqrt{73} }{ 6 }\]

    • one year ago
  13. shreya.
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    yes :-) ..!!

    • one year ago
  14. miah
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    yayy

    • one year ago
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