x^2-7x-18/2x+4

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Solution for x^2-7x-18/2x+4 equation: 


x in (-oo:+oo)

x^2-(7*x)-((18/2)*x)+4 = 0

x^2-7*x-9*x+4 = 0

x^2-16*x+4 = 0

DELTA = (-16)^2-(1*4*4)

DELTA = 240

DELTA > 0

x = (240^(1/2)+16)/(1*2) or x = (16-240^(1/2))/(1*2)

x = (4*15^(1/2)+16)/2 or x = (16-4*15^(1/2))/2

x in { (16-4*15^(1/2))/2, (4*15^(1/2)+16)/2 }

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