Ответ:
3x^2-13.5x+12x-54=0
3x^2-1.5x-54=0
2x^2-x-36=0
D=289
X1=(1+17)/4=4.5
X2=(1-17)/4=-4
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Ответ:
3x^2-13.5x+12x-54=0
3x^2-1.5x-54=0
2x^2-x-36=0
D=289
X1=(1+17)/4=4.5
X2=(1-17)/4=-4