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(7/8)*x^2-((3/4)*x)+5/16 = 0
(7/8)*x^2+(-3/4)*x+5/16 = 0
7/8*x^2-3/4*x+5/16 = 0
DELTA = (-3/4)^2-(5/16*7/8*4)
DELTA = -17/32
DELTA < 0
x belongs to the empty set
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