taylorjinks67 taylorjinks67
  • 20-12-2019
  • Mathematics
contestada

The equation which correctly represents this situation is
A) x2 = 306
B) 2x2 = 306
C) x2 + x = 306
D) 2x2 + x = 306

Respuesta :

devishri1977
devishri1977 devishri1977
  • 26-12-2019

Answer:

C) x2 + x = 306

Step-by-step explanation:

x2 + x = 306

x2 + x - 306  = 0

x2  + 18x - 17x + 18 * (-17) = 0

x ( x + 18) - 17 (x +18) =0

(x + 18) (x - 17 ) = 0

x = -18 or 17

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