Solve the Equation by Making an Appropriate Substitution $$x ^ { - 2 } - 12 x ^ { - 1 } + 31 = 0$$

question 125

Multiple Choice

Solve the equation by making an appropriate substitution.
- $$x ^ { - 2 } - 12 x ^ { - 1 } + 31 = 0$$

• A) \(\left\{ \frac { 6 \pm \sqrt { 5 } } { 31 } \right\}\)
• B) \(\left\{ \frac { 6 \pm 2 \sqrt { 5 } } { 31 } \right\}\)
• C) \(\left\{ \frac { - 6 \pm \sqrt { 5 } } { 31 } \right\}\)
• D) \(\left\{ \frac { 6 \pm \sqrt { 5 } } { 41 } \right\}\)

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