farfanivan farfanivan
  • 15-06-2017
  • Mathematics
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Find the number of solutions of the equation. 0 = x2 + 2x + 9

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konrad509
konrad509 konrad509
  • 15-06-2017
[tex]x^2+2x-9=0\\ \Delta=2^2-4\cdot1\cdot(-9)=4+36=40\ \textgreater \ 0\Rightarrow\text{two solutions exist}[/tex]
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