If and are the real roots of , what is ?
Answer and explanation
Correct answer: C. 2
- Step 1: Let ; then , so .
- Step 2: gives and gives , so the sum is .
Answer
2.
Why not the others: 0: the product of the roots was found. 5: the values of were added, not the values of . 3: one was added when solving for .
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