7x^2/2=x

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Solution for 7x^2/2=x equation: 


x in (-oo:+oo)

(7*x^2)/2 = x // - x

(7*x^2)/2-x = 0

7/2*x^2-x = 0

DELTA = (-1)^2-(0*7/2*4)

DELTA = 1

DELTA > 0

x = (1^(1/2)+1)/(2*7/2) or x = (1-1^(1/2))/(2*7/2)

x = 2/7 or x = 0

x in { 0, 2/7 }

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