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x in (-oo:+oo)
N = (1/3)*n^14 // - (1/3)*n^14
N-((1/3)*n^14) = 0
N+(-1/3)*n^14 = 0
N-1/3*n^14 = 0
x naleu017Cy do R
x in (-oo:+oo)
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