Answer:
u = 3
Step-by-step explanation:
[tex] {u}^{3} = 27[/tex]
[tex] {3}^{3} = 27[/tex]
[tex]3 \times 3 \times 3 = 27[/tex]
u = 3 , − 3 − 3 i √ 3 /2 , − 3 + 3 i √ 3 /2
Factor using difference of cubes and set each factor equal to 0 .
