x²-3x+1.64=0

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x²-3x+1.64=0
x²-3x+1.64=0

x²-3x+1.64=0
x²-3x+1.64=0
(x-3/2)²-9/4+1.64=0
(x-3/2)²=2.25-1.64=0.61
x-3/2 = ±根号0.61
x=3/2±根号0.61