Azaria2118
Azaria2118 Azaria2118
  • 20-10-2016
  • Mathematics
contestada

"x^2" plus four x -forty five equals zero

Respuesta :

virgotrash virgotrash
  • 20-10-2016
x^2 + 4x - 45 = 0
(x + 9)(x - 5) = 0
x + 9 = 0        x - 5 = 0
x = -9             x = 5
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