ashywalther ashywalther
  • 14-03-2017
  • Mathematics
contestada

Subtract (x3power+3x2second power)-(-2x second power-9)

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riveraalexiscar
riveraalexiscar riveraalexiscar
  • 14-03-2017
D = 4 - 4*9*(-7) = 4 + 252 = 256 = 16*16 
x1 = (-2 + 16)/9 = 14/ 9
x2 = (-2 - 16) / 9 = -2

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