20x^2-136x/7-(4)=0

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Solution for 20x^2-136x/7-(4)=0 equation: 


x in (-oo:+oo)

20*x^2-((136*x)/7)-4 = 0

20*x^2+(-136/7)*x-4 = 0

20*x^2-136/7*x-4 = 0

DELTA = (-136/7)^2-(-4*4*20)

DELTA = 34176/49

DELTA > 0

x = ((34176/49)^(1/2)+136/7)/(2*20) or x = (136/7-(34176/49)^(1/2))/(2*20)

x = ((34176/49)^(1/2)+136/7)/40 or x = (136/7-(34176/49)^(1/2))/40

x in { (136/7-(34176/49)^(1/2))/40, ((34176/49)^(1/2)+136/7)/40 }

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