(4/5)x2=x

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Solution for (4/5)x2=x equation: 


x in (-oo:+oo)

(4/5)*x^2 = x // - x

(4/5)*x^2-x = 0

4/5*x^2-x = 0

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

DELTA = 1

DELTA > 0

x = (1^(1/2)+1)/(4/5*2) or x = (1-1^(1/2))/(4/5*2)

x = 5/4 or x = 0

x in { 0, 5/4 }

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