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OpenStudy (chillhill):
Express (e+[1/e])^4 + (e-[1/e])^4 as the sum of three terms.
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OpenStudy (danjs):
can you expand everything out, and you may get 3 terms in powers of e,
OpenStudy (danjs):
2e^4 + 2e^(-4) + 12
OpenStudy (cmtboy2):
2e^4 + 2e^(-4) + 12
OpenStudy (chillhill):
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