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Solve the Equation by Completing the Square x2+2=xx ^ { 2 } + 2 = - x

Question 177

Multiple Choice

Solve the equation by completing the square.
- x2+2=xx ^ { 2 } + 2 = - x


A) {1i72,1+i72}\left\{ \frac { 1 - \mathrm { i } \sqrt { 7 } } { 2 } , \frac { 1 + \mathrm { i } \sqrt { 7 } } { 2 } \right\}
B) {1i72,1+i72}\left\{ \frac { - 1 - i \sqrt { 7 } } { 2 } , \frac { - 1 + i \sqrt { 7 } } { 2 } \right\}
C) {172,1+72}\left\{ \frac { - 1 - \sqrt { 7 } } { 2 } , \frac { - 1 + \sqrt { 7 } } { 2 } \right\}
D) {172,1+72}\left\{ \frac { 1 - \sqrt { 7 } } { 2 } , \frac { 1 + \sqrt { 7 } } { 2 } \right\}

Correct Answer:

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