sydneyc0asey sydneyc0asey
  • 02-11-2016
  • Mathematics
contestada

Solve using the quadratic formula show all work 2n2 - 7n - 3 = 0

Respuesta :

LittleRedMe
LittleRedMe LittleRedMe
  • 02-11-2016
Quadratic formula = ( -b +/- square root of b^2-4ac ) / 2a

In this case, a=2, b= -7 and c= -3

So:

(7 +/- square root of (-7)^2 - 4*2*(-3) ) / 2*2

= (7 +/- square root of 49 + 24 ) / 4

= 7 +/- square root of 73 / 4

Using a calculator, you end up with the answers: 3.886 and -0.386
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nkauf38
nkauf38 nkauf38
  • 04-11-2016
the answer is -1 i think
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