Объяснение:
А)x^11=-1
x=-1
Б)x^6-1=0
x^6=1
x=-1;1
В)x^3=27
x=3
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Объяснение:
А)x^11=-1
x=-1
Б)x^6-1=0
x^6=1
x=-1;1
В)x^3=27
x=3