If the roots of are , what is the value of ?

Answer and explanation

Correct answer: C.


.
  1. Step 1: Apply Vieta's formulas for cubic :
  2. Step 2: Use algebraic identity: .
  3. Step 3: Substitute values: .
  4. Step 4: Solve: .
Answer
14.
Why not the others: '' is ; '' is ; '' subtracts 24 instead of 22.

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