2x/5x-25=x

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Solution for 2x/5x-25=x equation: 


x in (-oo:+oo)

((2*x)/5)*x-25 = x // - x

((2*x)/5)*x-x-25 = 0

2/5*x^2-x-25 = 0

DELTA = (-1)^2-(-25*2/5*4)

DELTA = 41

DELTA > 0

x = (41^(1/2)+1)/(2/5*2) or x = (1-41^(1/2))/(2/5*2)

x = 5/4*(41^(1/2)+1) or x = 5/4*(1-41^(1/2))

x in { 5/4*(1-41^(1/2)), 5/4*(41^(1/2)+1) }

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