x^2-10x+21/98-2x^2

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Solution for x^2-10x+21/98-2x^2 equation: 


x in (-oo:+oo)

x^2-(2*x^2)-(10*x)+21/98 = 0

x^2-2*x^2-10*x+21/98 = 0

3/14-x^2-10*x = 0

DELTA = (-10)^2-(-1*3/14*4)

DELTA = 706/7

DELTA > 0

x = ((706/7)^(1/2)+10)/(-1*2) or x = (10-(706/7)^(1/2))/(-1*2)

x = ((706/7)^(1/2)+10)/(-2) or x = (10-(706/7)^(1/2))/(-2)

x in { ((706/7)^(1/2)+10)/(-2), (10-(706/7)^(1/2))/(-2) }

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