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D( p )
5*p = 0
5*p = 0
5*p = 0
5*p = 0 // : 5
p = 0
p in (-oo:0) U (0:+oo)
p-((3/5)*p)-3 = (2*p-3)/(5*p) // - (2*p-3)/(5*p)
p-((2*p-3)/(5*p))-((3/5)*p)-3 = 0
p-((2*p-3)/(5*p))+(-3/5)*p-3 = 0
(-1*(2*p-3))/(5*p)+p+(-3*p)/5-3 = 0
(-1*5*(2*p-3))/(5*5*p)+(5*5*p*p)/(5*5*p)+(-3*5*p*p)/(5*5*p)+(-3*5*5*p)/(5*5*p) = 0
5*5*p*p-1*5*(2*p-3)-3*5*p*p-3*5*5*p = 0
25*p^2-15*p^2-10*p-75*p+15 = 0
10*p^2-10*p-75*p+15 = 0
10*p^2-85*p+15 = 0
10*p^2-85*p+15 = 0
5*(2*p^2-17*p+3) = 0
2*p^2-17*p+3 = 0
DELTA = (-17)^2-(2*3*4)
DELTA = 265
DELTA > 0
p = (265^(1/2)+17)/(2*2) or p = (17-265^(1/2))/(2*2)
p = (265^(1/2)+17)/4 or p = (17-265^(1/2))/4
5*(p-((17-265^(1/2))/4))*(p-((265^(1/2)+17)/4)) = 0
(5*(p-((17-265^(1/2))/4))*(p-((265^(1/2)+17)/4)))/(5*5*p) = 0
(5*(p-((17-265^(1/2))/4))*(p-((265^(1/2)+17)/4)))/(5*5*p) = 0 // * 5*5*p
5*(p-((17-265^(1/2))/4))*(p-((265^(1/2)+17)/4)) = 0
( p-((17-265^(1/2))/4) )
p-((17-265^(1/2))/4) = 0 // + (17-265^(1/2))/4
p = (17-265^(1/2))/4
( p-((265^(1/2)+17)/4) )
p-((265^(1/2)+17)/4) = 0 // + (265^(1/2)+17)/4
p = (265^(1/2)+17)/4
p in { (17-265^(1/2))/4, (265^(1/2)+17)/4 }
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