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anonymous

  • one year ago

Calculate the discriminant. x2 + 2x – 2 = 0 A. –8 B. –4 C. 12 D. 8

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  1. Luigi0210
    • one year ago
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    The discriminant is: \(\Large b^2-4ac \)

  2. anonymous
    • one year ago
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    okay!

  3. pooja195
    • one year ago
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    List your abc values :) then just plug it in

  4. anonymous
    • one year ago
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    i dont know how to do that? @pooja195

  5. pooja195
    • one year ago
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    \[ax^2+bx+c\]

  6. pooja195
    • one year ago
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    Remeber this? :)

  7. anonymous
    • one year ago
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    kinda

  8. pooja195
    • one year ago
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    anything ^2 is your a value anything with ONLY a plain variable is your b and olny a number is your c

  9. pooja195
    • one year ago
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    \[x^2 + 2x – 2 = 0\]

  10. anonymous
    • one year ago
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    ok

  11. Luigi0210
    • one year ago
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    If it helps, I'll color code it for ya: \(\Large \color{red}{1}x^2+\color{blue}{2}x+\color{purple}{-2}=0 \) \(\Large \color{blue}{b}^2+4\color{red}{a}\color{purple}{c} \)

  12. Luigi0210
    • one year ago
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    That should be -4 not +4, sorry about that

  13. anonymous
    • one year ago
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    okay! @Luigi0210

  14. pooja195
    • one year ago
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    ok list the values :)

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