krystinamacias001 krystinamacias001
  • 24-04-2020
  • Mathematics
contestada

solve for x: x^2-2x=15

Respuesta :

176213
176213 176213
  • 24-04-2020

Answer:

x = 5 , x = -3

Step-by-step explanation:

x^2 - 2x = 15

x^2 - 2x - 15 = 15 - 15          (Subtract 15 from both sides.)

x^2 - 2x -15 = 0                   (Simplify.)

Set up & solve for a quadratic formula

* I will solve for your first x

2 + root 64 / 2x 1   =   2 + root 64 / 2

root 64 = 8

= 2 + 8 / 2

= 10 / 2

= 5

To solve for the second, follow the same pattern/formula for the first that I used to get 5.

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