(5-x)/4x-20

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Solution for (5-x)/4x-20 equation: 


x in (-oo:+oo)

x*((5-x)/4)-20 = 0

(x*(5-x))/4-20 = 0

(x*(5-x))/4+(-20*4)/4 = 0

x*(5-x)-20*4 = 0

5*x-x^2-80 = 0

5*x-x^2-80 = 0

5*x-x^2-80 = 0

DELTA = 5^2-(-80*(-1)*4)

DELTA = -295

DELTA < 0

1 = 0

1/4 = 0

1/4 = 0 // * 4

1 = 0

x belongs to the empty set

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