Solve the Equation by Making an Appropriate Substitution $$\left( x ^ { 2 } - 3 x \right) ^ { 2 } - 14 \left( x ^ { 2 } - 3 x \right) + 40 = 0$$

question 374

Multiple Choice

Solve the equation by making an appropriate substitution.
- $$\left( x ^ { 2 } - 3 x \right) ^ { 2 } - 14 \left( x ^ { 2 } - 3 x \right) + 40 = 0$$

• A) \(\{ 10,4 \}\)
• B) \(\{ - 2 , - 1,10,4,5,4 \}\)
• C) \(\{ - 2 , - 1,5,4 \}\)
• D) \(\{ 5,4 \}\)

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