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leanswag

  • 3 years ago

zy2-9y+3=0 can someone help me solve this im getting stuck where i plug in at -9^2-4(1)(3)

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  1. philo1234
    • 3 years ago
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    \[x = \frac{ 9 \pm \sqrt{(-9)^{2}-4(1)(3)} }{ 2(1)} = \frac{\sqrt{ 81-12} }{ 2} \]

  2. leanswag
    • 3 years ago
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    ok i worked it out and got 9+- 8 /2

  3. philo1234
    • 3 years ago
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    You should get: \[x = \frac{ 9\pm \sqrt{69} }{ 2 }\] This is as far as it simplifies unless you are asked to find an approximate value.

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