Abigail11111
Abigail11111 Abigail11111
  • 12-04-2017
  • Mathematics
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The roots of the equation 2x^2+8x-7=-2 are?

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Аноним Аноним
  • 15-04-2017
2x^2+8x-7=-2
2x^2+8x - 5 = 0

using the formula:- x = [-8 +/- sqrt(8^2 - 4*2*-5) ]  / 4
                                  =  -2 +/- sqrt 104)/2
                                  = 0.5495 ,   -4.549

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