x^2-1/7x-30/49=0

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Solution for x^2-1/7x-30/49=0 equation: 


x in (-oo:+oo)

x^2-((1/7)*x)-(30/49) = 0

x^2+(-1/7)*x-30/49 = 0

x^2-1/7*x-30/49 = 0

DELTA = (-1/7)^2-(-30/49*1*4)

DELTA = 121/49

DELTA > 0

x = ((121/49)^(1/2)+1/7)/(1*2) or x = (1/7-(121/49)^(1/2))/(1*2)

x = 6/7 or x = -5/7

x in { -5/7, 6/7 }

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