1)разложи на множители
t^3−t^2−0,4t+0,064
2) решите уравнение
49z+49−z^3−z^2=0
Z1=
Z2=
Z3=

1)=(t^3+0.064)-(t^2+0.4t)==(t+0.4)(t^2-0.4t+0.16)-t(t+0.4)==(t+0.4)(t^2-0.4t+0.16-t)==(t+0.4)(t^2-1.4t+0.16)2)49(z+1)-z^2(z+1)=0(z+1)(49-z^2)=0(z+1)(7-z)(7+z)=0z+1=0z1=-17-z=0z2=77+z=0z3=-7