SOLUTION: I am having radicals troubles. The problem I have is: 14/3-sqrt (7) I hope you understand how I worte it. Thank you for the help.

Algebra ->  Radicals -> SOLUTION: I am having radicals troubles. The problem I have is: 14/3-sqrt (7) I hope you understand how I worte it. Thank you for the help.      Log On


   

Question 491135: I am having radicals troubles. The problem I have is:
14/3-sqrt (7)
I hope you understand how I worte it. Thank you for the help.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
14%2F%283-sqrt+%287%29%29
Multiply numerator & denominator by the conjugate (3+sqrt(7))
14%283%2Bsqrt%287%29%29%2F%28%283-sqrt%287%29%29%283%2Bsqrt%287%29%29%29
Apply formula (a+b)(a-b) = a^2-b^2 for the denominator
14%283%2Bsqrt%287%29%29%2F%289-7%29
%287%2A%28cross%282%29%29%283%2Bsqrt%287%29%29%29%2F%28cross%282%29%29
7%2A%283%2Bsqrt%287%29%29
m.ananth@hotmail.ca