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p in (-oo:+oo)
2*p^2+(16/4)*p^2+12*p-(4*p)-80 = 0
2*p^2+(16/4)*p^2+12*p-4*p-80 = 0
6*p^2+8*p-80 = 0
DELTA = 8^2-(-80*4*6)
DELTA = 1984
DELTA > 0
p = (1984^(1/2)-8)/(2*6) or p = (-1984^(1/2)-8)/(2*6)
p = (8*31^(1/2)-8)/12 or p = (-8*31^(1/2)-8)/12
p in { (-8*31^(1/2)-8)/12, (8*31^(1/2)-8)/12 }
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