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flyinglikeabird?

  • 2 years ago

Determine the number of real solutions of x2 + 5x + 8 = 0. Show all your steps. (Hint: Use the discriminant.)

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  1. flyinglikeabird?
    • 2 years ago
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    a = 2, b = 5, c = 8, put that into the discriminant we get x = -5 + 5^2 -4(2)(8) and since it = 0 it has 1 real number and 1 rational root.

  2. flyinglikeabird?
    • 2 years ago
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    5^2 -4(2)(8) = 25 - 64 = -39

  3. flyinglikeabird?
    • 2 years ago
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    I have no idea what I am doing....

  4. Muskan
    • 2 years ago
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    |dw:1350067445840:dw|

  5. Muskan
    • 2 years ago
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    u have to use this formula

  6. flyinglikeabird?
    • 2 years ago
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    I was, just not sure if I was using it right. And idk how to type it out. Which apparently you cannot exactly type it out.

  7. Muskan
    • 2 years ago
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    |dw:1350067497678:dw|

  8. Muskan
    • 2 years ago
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    |dw:1350067560223:dw|

  9. Muskan
    • 2 years ago
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    is \[x ^{2}\] o 2x ??

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spraguer (Moderator)
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