x/7=x2/3

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Solution for x/7=x2/3 equation: 


x in (-oo:+oo)

x/7 = (x^2)/3 // - (x^2)/3

x/7-((x^2)/3) = 0

1/7*x-1/3*x^2 = 0

DELTA = (1/7)^2-(-1/3*0*4)

DELTA = 1/49

DELTA > 0

x = ((1/49)^(1/2)-1/7)/(-1/3*2) or x = (-(1/49)^(1/2)-1/7)/(-1/3*2)

x = 0 or x = 3/7

x in { 0, 3/7 }

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