jo9nnaP5iCharchann
jo9nnaP5iCharchann jo9nnaP5iCharchann
  • 09-08-2016
  • Mathematics
contestada

assume n is an integer and solve for n.

|2n - 3| = 5

a. {-4, -1}
b. {1, 1}
c. {-1, 4}
d. {4, 4}

Respuesta :

dalendrk
dalendrk dalendrk
  • 17-08-2016
|2n - 3| = 5 ⇔ 2n - 3 = -5 or 2n - 3 = 5    |add 3 to both sides

2n = -2 or 2n = 8    |divide both sides by 2

n = -1 or n = 4

Answer: c. {-1; 4}
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