If roots of the equation x 4 – 12x 3 + bx 2 + cx + 81 = 0 are positive then

Mathematics · JEE Advanced · NTA Exams — Complex Numbers and Quadratic Equations

1. –\(\frac{1}{2}\)
2. \(\frac{1}{2}\)
3. 1
4. –1

Answer

(C) 1

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