ddrreaaa
ddrreaaa ddrreaaa
  • 03-08-2017
  • Mathematics
contestada

solve the equation using any method: -2x^2-4x=6

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Luv2Teach
Luv2Teach Luv2Teach
  • 03-08-2017
I used the quadratic formula after moving the 6 back over to the other side:
[tex]x= \frac{4+/- \sqrt{16-4(-2)(-6)} }{-4} [/tex]
[tex]x= \frac{4+/- \sqrt{64} }{-4} [/tex]
[tex]x= \frac{4+/-8}{-4} [/tex]
[tex]x= \frac{4+8}{-4}=-3 [/tex] and
[tex]x= \frac{4-8}{-4} =1[/tex]
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