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x in (-oo:+oo)
m+11 = (1/4)*m-(2*n) // - (1/4)*m-(2*n)
m-((1/4)*m)+2*n+11 = 0
m+(-1/4)*m+2*n+11 = 0
3/4*m+2*n+11 = 0
x naleu017Cy do R
x in (-oo:+oo)
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