Posted by Reina on Tuesday, August 5, 2008 at 8:57pm.
[ a + 8/a^2 ]/ [1 + 2/a ]
multiply top and bottom by a^2
[a^3 + 8a ] / [a^2 + 2 a ]
[a^2 + 8] /[ a^2 + 2 ]
[ 1/x + 1/y ]/[1/x - 1/y]
multiply top and bottom by x y
[y+x]/[y-x]
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