SOLUTION: Find the solutions to the problem x-(5/x)=4 a. -1, 4 b. -1, 5 c. 1, 4 d. 1, 5

Algebra ->  Rational-functions -> SOLUTION: Find the solutions to the problem x-(5/x)=4 a. -1, 4 b. -1, 5 c. 1, 4 d. 1, 5      Log On


   

Question 83355This question is from textbook
: Find the solutions to the problem x-(5/x)=4
a. -1, 4
b. -1, 5
c. 1, 4
d. 1, 5 This question is from textbook

Answer by vertciel(183) About Me  (Show Source):
You can put this solution on YOUR website!
The answer is b) -1, 5.
You have:
x - (5/x) = 4
(x^2 - 5)/x = 4
x^2 - 5 = 4x
x^2 - 4x - 5 = 0
(x - 5)(x + 1) = 0
x = 5
x = -1