x^2/45-x

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Solution for x^2/45-x equation: 


x in (-oo:+oo)

(x^2)/45-x = 0

1/45*x^2-x = 0

DELTA = (-1)^2-(0*1/45*4)

DELTA = 1

DELTA > 0

x = (1^(1/2)+1)/(1/45*2) or x = (1-1^(1/2))/(1/45*2)

x = 45 or x = 0

x in { 0, 45 }

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