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D( p )
p = 0
p = 0
p = 0
p in (-oo:0) U (0:+oo)
(5/2)*p-(3/p)-4-2 = (4/2)*p-4 // - (4/2)*p-4
(5/2)*p-((4/2)*p)-(3/p)-4-2+4 = 0
(5/2)*p-2*p-3*p^-1-4-2+4 = 0
1/2*p^1-3*p^-1-2*p^0 = 0
(1/2*p^2-2*p^1-3*p^0)/(p^1) = 0 // * p^2
p^1*(1/2*p^2-2*p^1-3*p^0) = 0
p^1
(1/2)*p^2-2*p-3 = 0
(1/2)*p^2-2*p-3 = 0
DELTA = (-2)^2-(-3*4*(1/2))
DELTA = 10
DELTA > 0
p = (10^(1/2)+2)/(2*(1/2)) or p = (2-10^(1/2))/(2*(1/2))
p = 10^(1/2)+2 or p = 2-10^(1/2)
p in { 2-10^(1/2), 10^(1/2)+2}
p in { 2-10^(1/2), 10^(1/2)+2 }
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