jekasldnfb jekasldnfb
  • 07-08-2020
  • Mathematics
contestada

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.
a^2-2a-224=0

Respuesta :

altavistard
altavistard altavistard
  • 12-08-2020

Answer:

{-14, 16}

Step-by-step explanation:

The coefficients of this quadratic are a = 1, b = -2 and c = -224.

Thus, the discriminant is b^2 - 4ac, or (-2)^2 - 4(1)(-224), or 900, whose square root is 30.

Thus, the roots (solutions) are

      -(-2) ± 30

x = -----------------  =  {-14, 16}

             2

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