Schule11 Вроде так))))))))))))))))))

tamarabernukho 54x^2-6(x-3)^3=162+6x^3
54x^2-6(x^3-9x^2+27x-27)=162+6x^3
54x^2-6x^3+54x^2-162x+162=162+6x^3
12x^3-108x^2+162x=0
x(12x^2-108x+162)=0
x₁=0
4x^2-36x+54=0
D=36^2-4*4**54=1296-864=432=144*3

x₂=(36+12*√3)/8=(9+3*√3)/2
x₃=(36-12*√3)/8=(9-3*√3)/2