Simplify (frac{4}{x+1}-frac{3}{x-1})
-
A.
(frac{x+7}{x^2 – 1}) -
B.
(frac{x-7}{x^2 + 1}) -
C.
(frac{x-7}{x^2 – 1}) -
D.
(frac{x-11}{x^2 – 1})
Correct Answer: Option C
Explanation
(frac{4}{x+1}-frac{3}{x-1} \
=frac{4x – 4 – 3x – 3}{(x+1)(x-1)}=frac{x-7}{x^2 – 1})