BrionTrammell34
BrionTrammell34 BrionTrammell34
  • 10-04-2018
  • Mathematics
contestada

Solve |2x + 1| = 10
{9/2, 11/2}
{-9/2, 9/2}
{-11/2, 9/2}
Please answer as soon as possible! 10 points!

Respuesta :

carlosego
carlosego carlosego
  • 19-04-2018
By definition of absolute value we have two equalities:
 2x + 1 = 10
 2x + 1 = -10
 For 2x + 1 = 10:
 2x + 1 = 10
 2x = 10-1
 2x = 9
 x = 9/2
 For 2x + 1 = -10:
 2x + 1 = -10
 2x = -10-1
 2x = -11
 x = -11 / 2
 Answer:
 {-11/2, 9/2}
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