Jocelineflores28 Jocelineflores28
  • 03-06-2019
  • Mathematics
contestada

Find the values of x in this equation: x – 15 x = 2 . A. -7, 3 B. -5, 2 C. -7, 5 D. -2, 5 E. -3, 5

Respuesta :

eudora eudora
  • 03-07-2019

Answer:

Step-by-step explanation:

The given expression is x- [tex]\frac{15}{x}[/tex] = 2

and we have to solve this for the value of x,

( x- [tex]\frac{15}{x}[/tex]) = (2)

[tex]\frac{x^{2}-15 }{x} =2[/tex]

x² - 15 = 2x

x² - 2x - 15 = 0

x² - 5x + 3x - 15 = 0

x ( x-5 ) + 3(x - 5) = 0

( x+3 )( x-5 ) = 0

( x+3) = 0

x = -3

or ( x- 5 ) = 0

x = 5

Therefore, x = -3 and 5 will be the solution.

Option E is the answer.

Answer Link

Otras preguntas

The heartland of Canada, where the majority of Canadians live and work, is located A-around the great lakes and St.Lawrence river. B-around Hudson bay C-along C
In which state of matter transition do water molecules move the least? A. melting B. condensation C. evaporation D. freezing
list and describe two powerful forces of nature caused by plate tectonics
Which statement best describes a benefit of civic participation
find the zeros of the function f(x)=2x^2-7x-30
The largest copper mines can be found in which of the following countries?
Freddy is searching for a shirt and discovers that he has 12 shirts for every 6 pair of jeans.If he has 18 shirts, how many pairs of jeans does he have?
Make a simple compound sentence for auditory
What fraction is the same as seven tenths
How as the Soviet collectivization of agriculture an example of a dictatorial government