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Solve the Equation x22x115=0x ^ { - 2 } - 2 x ^ { - 1 } - 15 = 0

Question 247

Multiple Choice

Solve the equation.
- x22x115=0x ^ { - 2 } - 2 x ^ { - 1 } - 15 = 0


A) {15,13}\left\{ \frac { 1 } { 5 } , - \frac { 1 } { 3 } \right\}
B) {15,1}\{ - 15,1 \}
C) {15,13}\left\{ - \frac { 1 } { 5 } , \frac { 1 } { 3 } \right\}
D) {5,3}\{ - 5 , - 3 \}

Correct Answer:

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