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c in (-oo:+oo)
25 = ((c-25)^2)/3 // - ((c-25)^2)/3
25-(((c-25)^2)/3) = 0
(-1*(c-25)^2)/3+25 = 0
(-1*(c-25)^2)/3+(3*25)/3 = 0
3*25-1*(c-25)^2 = 0
50*c-c^2-550 = 0
50*c-c^2-550 = 0
50*c-c^2-550 = 0
DELTA = 50^2-(-550*(-1)*4)
DELTA = 300
DELTA > 0
c = (300^(1/2)-50)/(-1*2) or c = (-300^(1/2)-50)/(-1*2)
c = (10*3^(1/2)-50)/(-2) or c = (-10*3^(1/2)-50)/(-2)
(c-((10*3^(1/2)-50)/(-2)))*(c-((-10*3^(1/2)-50)/(-2))) = 0
((c-((10*3^(1/2)-50)/(-2)))*(c-((-10*3^(1/2)-50)/(-2))))/3 = 0
((c-((10*3^(1/2)-50)/(-2)))*(c-((-10*3^(1/2)-50)/(-2))))/3 = 0 // * 3
(c-((10*3^(1/2)-50)/(-2)))*(c-((-10*3^(1/2)-50)/(-2))) = 0
( c-((-10*3^(1/2)-50)/(-2)) )
c-((-10*3^(1/2)-50)/(-2)) = 0 // + (-10*3^(1/2)-50)/(-2)
c = (-10*3^(1/2)-50)/(-2)
( c-((10*3^(1/2)-50)/(-2)) )
c-((10*3^(1/2)-50)/(-2)) = 0 // + (10*3^(1/2)-50)/(-2)
c = (10*3^(1/2)-50)/(-2)
c in { (-10*3^(1/2)-50)/(-2), (10*3^(1/2)-50)/(-2) }
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