Solve the Equation $8 x ^ { 2 } - 2 x - 21 = 0$

question 76

Multiple Choice

Solve the equation. $8 x ^ { 2 } - 2 x - 21 = 0$

• A) \(\left\{ \frac { 3 } { 2 } , - \frac { 7 } { 4 } \right\}\)
• B) \(\left\{ - \frac { 3 } { 2 } , \frac { 7 } { 4 } \right\}\)
• C) \(\left\{ - \frac { 3 } { 2 } , - \frac { 7 } { 4 } \right\}\)
• D) \(\left\{ - \frac { 3 } { 2 } , \frac { 4 } { 7 } \right\}\)
• E) \(\left\{ \frac { 3 } { 2 } , \frac { 7 } { 4 } \right\}\)

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