x2-9/4x

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Solution for x2-9/4x equation: 


x in (-oo:+oo)

x^2-((9/4)*x) = 0

x^2+(-9/4)*x = 0

x^2-9/4*x = 0

DELTA = (-9/4)^2-(0*1*4)

DELTA = 81/16

DELTA > 0

x = ((81/16)^(1/2)+9/4)/(1*2) or x = (9/4-(81/16)^(1/2))/(1*2)

x = 9/4 or x = 0

x in { 0, 9/4 }

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