n^2-5n-36/10n

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Solution for n^2-5n-36/10n equation: 


n in (-oo:+oo)

n^2-(5*n)-((36/10)*n) = 0

n^2-5*n+(-18/5)*n = 0

n^2-43/5*n = 0

DELTA = (-43/5)^2-(0*1*4)

DELTA = 1849/25

DELTA > 0

n = ((1849/25)^(1/2)+43/5)/(1*2) or n = (43/5-(1849/25)^(1/2))/(1*2)

n = 43/5 or n = 0

n in { 0, 43/5 }

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