(3х³+3х²+3х+1)²=0
3х³+3х²+3х+1=0
2х³+(х+1)³=0
(2^1/3*х)³+(х+1)³=0
(2^1/3*х+х+1)(2^(2/3)х²-2^(1/3)*х(х+1)+(х+1)²)=0
1)2^(1/3)*х+х+1=0
х(2¹/³+1)+1=0
х=-1/(2¹/³+1)
2)2²/³х²-2¹/³х²-2¹/³*х-2¹/³+х²+2х+1=0
х²(2²/³-2¹/³+1)-(2¹/³-2)*х+1=0
Д=(2¹/³-2)²-4(2²/³-2¹/³+1)=
2²/³-4*2¹/³+4-4*2²/³+4*2¹/³-4=
-3*2²/³<0<br>
нет решения
ответ х=-1/(2¹/³+1)