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Solve
- x420x2576=0x ^ { 4 } - 20 x ^ { 2 } - 576 = 0

Question 115

Multiple Choice

Solve.
- x420x2576=0x ^ { 4 } - 20 x ^ { 2 } - 576 = 0


A) {6,6,4,4}\{ - 6,6 , - 4,4 \}
B) {6,6,4i,4i}\{ - 6,6 , - 4 i , 4 i \}
C) {36,36,16i,16i}\{ - 36,36 , - 16 i , 16 i \}
D) {4,4,6i,6i}\{ - 4,4 , - 6 \mathrm { i } , 6 \mathrm { i } \}

Correct Answer:

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