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p in (-oo:+oo)
(37/2)*p-(4*p^2) = 0
(37/2)*p-4*p^2 = 0
37/2*p-4*p^2 = 0
DELTA = (37/2)^2-(-4*0*4)
DELTA = 1369/4
DELTA > 0
p = ((1369/4)^(1/2)-37/2)/(-4*2) or p = (-(1369/4)^(1/2)-37/2)/(-4*2)
p = 0 or p = 37/8
p in { 0, 37/8 }
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