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p in (-oo:+oo)
2*p-(p*((6*p+11)/6))+5+7 = -10/23 // + -10/23
2*p-(p*((6*p+11)/6))-(-10/23)+5+7 = 0
2*p-(p*((6*p+11)/6))+10/23+5+7 = 0
(-1*p*(6*p+11))/6+2*p+10/23+5+7 = 0
(-1*23*p*(6*p+11))/(6*23)+(2*6*23*p)/(6*23)+(6*10)/(6*23)+(5*6*23)/(6*23)+(6*7*23)/(6*23) = 0
2*6*23*p-1*23*p*(6*p+11)+6*10+5*6*23+6*7*23 = 0
23*p-138*p^2+60+690+966 = 0
23*p-138*p^2+750+966 = 0
23*p-138*p^2+1716 = 0
23*p-138*p^2+1716 = 0
23*p-138*p^2+1716 = 0
DELTA = 23^2-(-138*4*1716)
DELTA = 947761
DELTA > 0
p = (947761^(1/2)-23)/(-138*2) or p = (-947761^(1/2)-23)/(-138*2)
p = (947761^(1/2)-23)/(-276) or p = (947761^(1/2)+23)/276
(p-((947761^(1/2)-23)/(-276)))*(p-((947761^(1/2)+23)/276)) = 0
((p-((947761^(1/2)-23)/(-276)))*(p-((947761^(1/2)+23)/276)))/(6*23) = 0
((p-((947761^(1/2)-23)/(-276)))*(p-((947761^(1/2)+23)/276)))/(6*23) = 0 // * 6*23
(p-((947761^(1/2)-23)/(-276)))*(p-((947761^(1/2)+23)/276)) = 0
( p-((947761^(1/2)+23)/276) )
p-((947761^(1/2)+23)/276) = 0 // + (947761^(1/2)+23)/276
p = (947761^(1/2)+23)/276
( p-((947761^(1/2)-23)/(-276)) )
p-((947761^(1/2)-23)/(-276)) = 0 // + (947761^(1/2)-23)/(-276)
p = (947761^(1/2)-23)/(-276)
p in { (947761^(1/2)+23)/276, (947761^(1/2)-23)/(-276) }
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