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August 21, 2014

August 21, 2014

Posted by **Brittany** on Monday, November 19, 2012 at 1:57pm.

f(x)=x^4-68x^2+256

- precalccc -
**Reiny**, Monday, November 19, 2012 at 2:29pmx^4 - 68x^2 + 256 = 0

(x^2-64)(x^2-4) = 0

x = ± 8 or x = ± 2

take it from there

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