SOLUTION: The difference of a number 12 times it's reciprical equals 4

Algebra ->  Test -> SOLUTION: The difference of a number 12 times it's reciprical equals 4      Log On


   

Question 718400: The difference of a number 12 times it's reciprical equals 4
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The difference of a number and 12 times it's reciprocal equals 4
:
Just write what it says
n - 12%2Fn = 4
multiply by n
n^2 - 12 = 4n
n^2 - 4n - 12 = 0
factors to
(n-6)(n+2) = 0
two solutions
n = 6
and
n = -2
:
:
You can check both solutions in the original equation