1964 AHSME Problems/Problem 7
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Problem
Let n be the number of real values of for which the roots of are equal. Then n equals:
Solution
If the roots of the quadratic are equal, then . Plugging in into the equation gives . This leads to , so there are two values of that work, giving answer .
See Also
1964 AHSC (Problems • Answer Key • Resources) | ||
Preceded by Problem 6 |
Followed by Problem 8 | |
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