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Solve the Equation n2+n+7=0\mathrm { n } ^ { 2 } + \mathrm { n } + 7 = 0

Question 119

Multiple Choice

Solve the equation.
- n2+n+7=0\mathrm { n } ^ { 2 } + \mathrm { n } + 7 = 0


A) {1332,1+332}\left\{ \frac { - 1 - 3 \sqrt { 3 } } { 2 } , \frac { - 1 + 3 \sqrt { 3 } } { 2 } \right\}
B) {13i32,1+3i32}\left\{ \frac { - 1 - 3 i \sqrt { 3 } } { 2 } , \frac { - 1 + 3 i \sqrt { 3 } } { 2 } \right\}
C) {1332,1+332}\left\{ \frac { 1 - 3 \sqrt { 3 } } { 2 } , \frac { 1 + 3 \sqrt { 3 } } { 2 } \right\}
D) {13i32,1+3i32}\left\{ \frac { 1 - 3 \mathrm { i } \sqrt { 3 } } { 2 } , \frac { 1 + 3 \mathrm { i } \sqrt { 3 } } { 2 } \right\}

Correct Answer:

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