prieto48 prieto48
  • 10-11-2018
  • Mathematics
contestada

the sum of a number and its reciprocal is 65/8. Find the numbers.

Respuesta :

tramserran
tramserran tramserran
  • 10-11-2018

Answer: 8 and [tex]\frac{1}{8}[/tex]

Step-by-step explanation:

x + [tex]\frac{1}{x}[/tex] = [tex]\frac{65}{8}[/tex]

need to eliminate the denominator:

x(8x) + [tex]\frac{1}{x}[/tex](8x) = [tex]\frac{65}{8}[/tex](8x)

8x² + 8 = 65x

8x² - 65x + 8 = 0

(8x -1)(x - 8) = 0

(8x -1) = 0           (x - 8) = 0

x = [tex]\frac{1}{8}[/tex]                      x = 8

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