x^2-2/7x+1/49=7/49

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Solution for x^2-2/7x+1/49=7/49 equation: 


x in (-oo:+oo)

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

x^2-((2/7)*x)+1/49-(7/49) = 0

x^2+(-2/7)*x+1/49-1/7 = 0

x^2-2/7*x-6/49 = 0

DELTA = (-2/7)^2-(-6/49*1*4)

DELTA = 4/7

DELTA > 0

x = ((4/7)^(1/2)+2/7)/(1*2) or x = (2/7-(4/7)^(1/2))/(1*2)

x = ((4/7)^(1/2)+2/7)/2 or x = (2/7-(4/7)^(1/2))/2

x in { (2/7-(4/7)^(1/2))/2, ((4/7)^(1/2)+2/7)/2 }

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