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Find All Real Solutions x=1+172x = \sqrt { \frac { - 1 + \sqrt { 17 } } { 2 } }

Question 10

Multiple Choice

Find all real solutions. x 4 + x 2 - 4 = 0


A) x=1+172x = \sqrt { \frac { - 1 + \sqrt { 17 } } { 2 } }
B) x=1132x = \sqrt { \frac { 1 - \sqrt { 13 } } { 2 } }
C) x=±1132x = \pm \sqrt { \frac { 1 - \sqrt { 13 } } { 2 } }
D) x=±1±172x = \pm \sqrt { \frac { - 1 \pm \sqrt { 17 } } { 2 } }
E) x=±1+172x = \pm \sqrt { \frac { - 1 + \sqrt { 17 } } { 2 } }

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