x/4x-7-2/7x-4

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Solution for x/4x-7-2/7x-4 equation: 


x in (-oo:+oo)

(x/4)*x-((2/7)*x)-7-4 = 0

(x/4)*x+(-2/7)*x-7-4 = 0

1/4*x^2-2/7*x-11 = 0

DELTA = (-2/7)^2-(-11*1/4*4)

DELTA = 543/49

DELTA > 0

x = ((543/49)^(1/2)+2/7)/(1/4*2) or x = (2/7-(543/49)^(1/2))/(1/4*2)

x = 2*((543/49)^(1/2)+2/7) or x = 2*(2/7-(543/49)^(1/2))

x in { 2*(2/7-(543/49)^(1/2)), 2*((543/49)^(1/2)+2/7) }

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