Solved

Solve
- x4−22x2−75=0x ^ { 4 } - 22 x ^ { 2 } - 75 = 0

Question 45

Multiple Choice

Solve.
- x4−22x2−75=0x ^ { 4 } - 22 x ^ { 2 } - 75 = 0


A) 5,i35 , i \sqrt { 3 }
B) −5,5,−i3,i3- 5,5 , - \mathrm { i } \sqrt { 3 } , \mathrm { i } \sqrt { 3 }
C) −3,3,−5i,5i- \sqrt { 3 } , \sqrt { 3 } , - 5 i , 5 i ,
D) −25,3- 25,3

Correct Answer:

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