3х(х²-8)-3х³=12
3х³- 24х -3х³=12
-24х=12
х=-1/2
(х+8)(5х-6)-20=5х²
5х²+40х-6х-48-5х²=0
34х= 48
х=24/17
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3х(х²-8)-3х³=12
3х³- 24х -3х³=12
-24х=12
х=-1/2
(х+8)(5х-6)-20=5х²
5х²+40х-6х-48-5х²=0
34х= 48
х=24/17