Exams › JEE Advanced › Maths
Find the number of integral values of x satisfying the equation 5^(log₅(x)) + 4x + 20 = 0.
- 0
- 1
- 2
- 3
Correct answer: 0
Solution
Since 5^(log₅(x)) = x (requires x > 0), the equation becomes x + 4x + 20 = 0, giving x = -4. But x = -4 is outside the domain (x must be positive), so there are no valid integral solutions.
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