x^2-7x=7/2

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Solution for x^2-7x=7/2 equation: 


x in (-oo:+oo)

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

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

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

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

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

DELTA = 63

DELTA > 0

x = (63^(1/2)+7)/(1*2) or x = (7-63^(1/2))/(1*2)

x = (3*7^(1/2)+7)/2 or x = (7-3*7^(1/2))/2

x in { (7-3*7^(1/2))/2, (3*7^(1/2)+7)/2 }

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