Ответ:
4х^2-15х+9=0
Д=15^2-4*9*4=81
Х1=(15+9)/8=3
Х2=(15-9)/8=3/4=0,75
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Ответ:
4х^2-15х+9=0
Д=15^2-4*9*4=81
Х1=(15+9)/8=3
Х2=(15-9)/8=3/4=0,75