Make an Appropriate Substitution and Solve the Equation $$( 3 x + 7 ) ^ { 2 } + 2 ( 3 x + 7 ) - 15 = 0$$

question 39

Multiple Choice

Make an appropriate substitution and solve the equation.
- $$( 3 x + 7 ) ^ { 2 } + 2 ( 3 x + 7 ) - 15 = 0$$

• A) \(\left\{ - \frac { 2 } { 3 } , - \frac { 10 } { 3 } \right\}\)
• B) \(\left\{ - 4 , - \frac { 10 } { 3 } \right\}\)
• C) \(\left\{ - 4 , - \frac { 4 } { 3 } \right\}\)
• D) \(\left\{ - \frac { 2 } { 3 } , - \frac { 4 } { 3 } \right\}\)

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