-x^2-5/4x+21/4=0

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Solution for -x^2-5/4x+21/4=0 equation: 


x in (-oo:+oo)

(-x)^2-((5/4)*x)+21/4 = 0

(-x)^2+(-5/4)*x+21/4 = 0

x^2-5/4*x+21/4 = 0

DELTA = (-5/4)^2-(1*4*21/4)

DELTA = -311/16

DELTA < 0

x belongs to the empty set

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