mathhelp28
mathhelp28 mathhelp28
  • 19-05-2017
  • Mathematics
contestada

use the quadratic formula to solve x^2+2x-5

use the quadratic formula to solve x22x5 class=

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debbieperez2002
debbieperez2002 debbieperez2002
  • 19-05-2017
The quadratic formula is x = [-b +- √(b^2-4ac)]/2a

So, in the equation above, a = 1, b = 2, and c = -5. 
When you plug them in and solve, you get x = -1 + 
√6 and also x = -1 - √6.
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