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2x^2-3x-3/2=0
x^2-3/2*x=3/4
x^2-3/2*x+(3/4)^2=3/4+9/16
(x-3/4)^2=21/16
x-3/4= +/- 根号21/4
x= 3/4 +/- 根号21/4
x^2-3/2*x=3/4
x^2-3/2*x+(3/4)^2=3/4+9/16
(x-3/4)^2=21/16
x-3/4= +/- 根号21/4
x= 3/4 +/- 根号21/4
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