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Solve the Equation Exactly in the Complex Number System x3+125=0x ^ { 3 } + 125 = 0

Question 82

Multiple Choice

Solve the equation exactly in the complex number system.
- x3+125=0x ^ { 3 } + 125 = 0


A) x=52,x=52±5i32x = - \frac { 5 } { 2 } , x = \frac { 5 } { 2 } \pm \frac { 5 i \sqrt { 3 } } { 2 }
B) x=5,x=52+5i32,x=525i32x = - 5 , x = \frac { 5 } { 2 } + \frac { 5 i \sqrt { 3 } } { 2 } , x = - \frac { 5 } { 2 } - \frac { 5 i \sqrt { 3 } } { 2 }
C) x=5,x=52±5i32x = 5 , x = \frac { 5 } { 2 } \pm \frac { 5 i \sqrt { 3 } } { 2 }
D) x=5,x=52±5i32x = - 5 , x = \frac { 5 } { 2 } \pm \frac { 5 i \sqrt { 3 } } { 2 }

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