anonymous
  • anonymous
5. Solve for x: 2x2 - 4x - 14 = 0 (1 point)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
inkyvoyd
  • inkyvoyd
x^2-2x-7=0 Now complete the square, because nobody loves you. Nobody loves you because you won't do your hoemwork.
inkyvoyd
  • inkyvoyd
kumar, please stop blindly giving answers. :/

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anonymous
  • anonymous
hint. use.... \[\LARGE x_{1/2}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\] you have the quadratic equation...
anonymous
  • anonymous
\[2x^2 - 4x - 14 = 0\] \[x^2-2x-7=0\] \[x^2-2x=7\] \[(x-1)^2=7+1=8\] \[x-1=\pm\sqrt{8}=\pm2\sqrt{2}\] \[x=1\pm\sqrt{2}\]
anonymous
  • anonymous
@satellite73 check out your two last rows , it seems something got vanish !

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