tiffanyandersoot9fhq tiffanyandersoot9fhq
  • 04-08-2017
  • Mathematics
contestada

x^2+4x-11 in vertex form by completing the square

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jayster107
jayster107 jayster107
  • 04-08-2017
x ^2- 4x + 4 = 11 + 4 

( x - 2 ) ² = 15 

x - 2 = ±√15 

x = 2 ±√15

I hope this is right or at least close...;)
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amirreza688 amirreza688
  • 04-08-2017
use the coefficient of x , divide it by two and square it .
4/2=2
x^2+4x+(4-15)
(x+2)^-15
vertex is (-2,-15)
Answer Link

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