Posted by Lauren on Friday, January 29, 2010 at 1:08pm.
work the denominator first.
2/(x+11) * x/(x^2-2x-3)
2/(x+11) * x/(x-3)(x-1)
get the common denominator..
add the fractions. Then invert,
1/(2(x^2-1) * inverted fraction
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