Solve the equation by making an appropriate substitution.
-$$7 x ^ { - 2 } - 8 x ^ { - 1 } + 1 = 0$$
A) $\{ 1,7 \}$
B) $\left\{ \frac { 1 } { 7 } , 1 \right\}$
C) $\{ - 1 , - 7 \}$
D) $\left\{ - \frac { 1 } { 7 } , - 1 \right\}$

Question

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

Solve the Equation by Making an Appropriate Substitution 7x−2−8x−1+1=07 x ^ { - 2 } - 8 x ^ { - 1 } + 1 = 07x−2−8x−1+1=0

Solve the Equation by Making an Appropriate Substitution $7 x ^ { - 2 } - 8 x ^ { - 1 } + 1 = 0$