SOLUTION: f(4.3)= the square root of x-4 divided by x^2-9 I have to give a radical as an answer, I cannot give a decimal. PLEASE HELP, THANK YOU !!!

Algebra ->  Functions -> SOLUTION: f(4.3)= the square root of x-4 divided by x^2-9 I have to give a radical as an answer, I cannot give a decimal. PLEASE HELP, THANK YOU !!!      Log On


   

Question 940994: f(4.3)= the square root of x-4 divided by x^2-9
I have to give a radical as an answer, I cannot give a decimal.
PLEASE HELP, THANK YOU !!!
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I think this is what you're asking,
f%28x%29=sqrt%28x-4%29%2F%28x%5E2-9%29
So find f%284.3%29=f%2843%2F10%29
f%2843%2F10%29=sqrt%2843%2F10-4%29%2F%28%2843%2F10%29%5E2-9%29
f%2843%2F10%29=sqrt%2843%2F10-40%2F10%29%2F%28%281849%2F100%29-900%2F100%29
f%2843%2F10%29=sqrt%283%2F10%29%2F%28949%2F100%29
f%2843%2F10%29=%28sqrt%2830%29%2F10%29%2F%28949%2F100%29
highlight%28f%2843%2F10%29=%2810sqrt%2830%29%29%2F949%29