If , what is the sum of the possible values of ?
Answer and explanation
Correct answer: E. 6
- Step 1: Apply Vieta's formulas: the sum of the roots of quadratic equation is .
- Step 2: Alternatively, factor the quadratic: , giving roots and , so .
Answer
6.
Why not the others: -1 is the root difference ; 5 is the product of the roots; 8 adds ; 7 is .
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