РАЗЛОЖИТЕ на множители z³-121z 20t³-20t²+5t z⁴-27zy³ t²-y²+2t-2y

1) =z(z²-121)=z(z-11)(z+11) 2) =5t(4t²-4t+1)=5t(2t-1)² 3) =z⁴-27zy³=z(z³-(3y)³)=z(z-3y)(z²+3yz+9y²) 4) =(t-y)(t+y)+2(t-y)=(t-y)(t+y+2)