x/7x-63*x^2-9x/9

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Solution for x/7x-63*x^2-9x/9 equation: 


x in (-oo:+oo)

(x/7)*x-(63*x^2)-((9*x)/9) = 0

(x/7)*x-63*x^2-x = 0

-440/7*x^2-x = 0

DELTA = (-1)^2-(-440/7*0*4)

DELTA = 1

DELTA > 0

x = (1^(1/2)+1)/(-440/7*2) or x = (1-1^(1/2))/(-440/7*2)

x = -7/440 or x = 0

x in { -7/440, 0 }

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