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Solve
- 5x4−403x2−162=05 x ^ { 4 } - 403 x ^ { 2 } - 162 = 0

Question 221

Multiple Choice

Solve.
- 5x4−403x2−162=05 x ^ { 4 } - 403 x ^ { 2 } - 162 = 0


A) −9,9,−i105,i105- 9,9 , - \frac { \mathrm { i } \sqrt { 10 } } { 5 } , \frac { \mathrm { i } \sqrt { 10 } } { 5 }
B) 9,i1059 , \frac { \mathrm { i } \sqrt { 10 } } { 5 }
C) −9i,9i,−i105,i105- 9 i , 9 i , - \frac { i \sqrt { 10 } } { 5 } , \frac { i \sqrt { 10 } } { 5 }
D) −105,105,−9,9- \frac { \sqrt { 10 } } { 5 } , \frac { \sqrt { 10 } } { 5 } , - 9,9

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