Question

6x - x²-9=0. resolver las ecuaciones por la fórmula general​

Answer 1

Respuesta:

x = 3

Explicación paso a paso:

x = -b ± √b² - 4ac / 2a

  a = -1, b = 6, c = -9

x = -6 ± √6²- 4 (-1) (-9) / 2 (-1)

x = -6 ± √6² - 36 / 2 (-1)

x = -6 ± √36  -36 / 2 (-1)

x = -6 ± √0 / 2 (-1)

x = -6 ± √0 / -2

x = -6  / -2

  -a / -b = a / b

x = 6 / 2

x = 3