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OpenStudy (anonymous):
Simplify x squared minus 16 all over x squared minus 8 times x plus 16. Answer -1 2 over x minus 2 x plus 4 all over x x plus 4 all over x minus 4
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OpenStudy (mertsj):
4
Directrix (directrix):
x plus 4 all over x minus 4 ------------
Directrix (directrix):
[(x+4)(x-4)] / [(x-4)(x-4)] = (x + 4)(x - 4)
OpenStudy (aravindg):
x plus 4 all over x minus 4
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