0.25х²+ 67.5х+ 13.5х+ 3645 - 0.1=0
0.25х²+ 81х + 3644.9 = 0
D= 6561- 4×0.25×3644.9 = 2916.1
х1= ( -810 - √ 656100- 364490) / 5 = (-810 - 11√2410) / 5
x2= ( -810+ √ 656100 - 364490 ) / 5 = ( -810 + 11√2410 ) / 5
Ответ: ( -810 - 11√2410 ) / 5 ; ( -810 + 11√2410) / 5