0=(22/5-x)(3/5-x)-84/5

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Solution for 0=(22/5-x)(3/5-x)-84/5 equation: 


x in (-oo:+oo)

0 = (22/5-x)*(3/5-x)-(84/5) // - (22/5-x)*(3/5-x)-(84/5)

84/5-((22/5-x)*(3/5-x))+0 = 0

84/5-((22/5-x)*(3/5-x)) = 0

84/5-1*(22/5-x)*(3/5-x) = 0

(-1*5*(22/5-x)*(3/5-x))/5+84/5 = 0

84-1*5*(22/5-x)*(3/5-x) = 0

25*x-5*x^2+354/5 = 0

25*x-5*x^2+354/5 = 0

25*x-5*x^2+354/5 = 0

DELTA = 25^2-(-5*4*354/5)

DELTA = 2041

DELTA > 0

x = (2041^(1/2)-25)/(-5*2) or x = (-2041^(1/2)-25)/(-5*2)

x = (2041^(1/2)-25)/(-10) or x = (2041^(1/2)+25)/10

(x-((2041^(1/2)-25)/(-10)))*(x-((2041^(1/2)+25)/10)) = 0

((x-((2041^(1/2)-25)/(-10)))*(x-((2041^(1/2)+25)/10)))/5 = 0

((x-((2041^(1/2)-25)/(-10)))*(x-((2041^(1/2)+25)/10)))/5 = 0 // * 5

(x-((2041^(1/2)-25)/(-10)))*(x-((2041^(1/2)+25)/10)) = 0

( x-((2041^(1/2)+25)/10) )

x-((2041^(1/2)+25)/10) = 0 // + (2041^(1/2)+25)/10

x = (2041^(1/2)+25)/10

( x-((2041^(1/2)-25)/(-10)) )

x-((2041^(1/2)-25)/(-10)) = 0 // + (2041^(1/2)-25)/(-10)

x = (2041^(1/2)-25)/(-10)

x in { (2041^(1/2)+25)/10, (2041^(1/2)-25)/(-10) }

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