SOLUTION: 37. subtract. x/x^2-9 - 3/x^2-9 A. x+3/x B. 1/x-3 C. 3/x+3 D. 1/x+3

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: 37. subtract. x/x^2-9 - 3/x^2-9 A. x+3/x B. 1/x-3 C. 3/x+3 D. 1/x+3      Log On


   

Question 258187: 37. subtract.
x/x^2-9 - 3/x^2-9

A. x+3/x
B. 1/x-3
C. 3/x+3
D. 1/x+3
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
Let's rewrite these as and since they are the same denominator it'll be:
(x-3)/(x^2-9) The denominator can be expanded as:
(x-3)/(x-3)(x+3) The top and bottom reduce to 1 so the answer is:
1/x+3
RJ
Check out a new book I wrote at:
www.math-unlock.com