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2*x^2-(3*x)+9/8 = 0
2*x^2-3*x+9/8 = 0
2*x^2-3*x+9/8 = 0
DELTA = (-3)^2-(9/8*2*4)
DELTA = 0
x = 3/(2*2)
x = 3/4 or x = 3/4
x in { 3/4, 3/4 }
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