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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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