Ответ:
1) (3х+1)⁴<625
|3х+1|<5
3х+1<5,. 3х+1≥0
х<4/3,. х≥-1/3
х>-2. х≥-1/3
х€(-2,4/3)
верно
2) верно
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Ответ:
1) (3х+1)⁴<625
|3х+1|<5
3х+1<5,. 3х+1≥0
х<4/3,. х≥-1/3
х>-2. х≥-1/3
х€(-2,4/3)
верно
2) верно