Solve.
-$$x ^ { - 2 } + 8 x ^ { - 1 } + 7 = 0$$
A) $\left\{ \frac { 1 } { 7 } , 1 \right\}$
B) $\left\{ - \frac { 1 } { 7 } , - 1 \right\}$
C) $\{ - 1 , - 7 \}$
D) $\{ 1,7 \}$

Question

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The Answer of Solve.
-$$x ^ { - 2 } + 8 x ^ { - 1 } + 7 = 0$$
A) $\left\{ \frac { 1 } { 7 } , 1 \right\}$
B) $\left\{ - \frac { 1 } { 7 } , - 1 \right\}$
C) $\{ - 1 , - 7 \}$
D) $\{ 1,7 \}$

Solve - x−2+8x−1+7=0x ^ { - 2 } + 8 x ^ { - 1 } + 7 = 0x−2+8x−1+7=0

Solve
- $x ^ { - 2 } + 8 x ^ { - 1 } + 7 = 0$