s^2=9s/5

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Solution for s^2=9s/5 equation: 


s in (-oo:+oo)

s^2 = (9*s)/5 // - (9*s)/5

s^2-((9*s)/5) = 0

s^2+(-9/5)*s = 0

s^2-9/5*s = 0

DELTA = (-9/5)^2-(0*1*4)

DELTA = 81/25

DELTA > 0

s = ((81/25)^(1/2)+9/5)/(1*2) or s = (9/5-(81/25)^(1/2))/(1*2)

s = 9/5 or s = 0

s in { 0, 9/5 }

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