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Question 17 : If log₅log₈(x² - 1) = 0, then a possible value of x is

1. 2√2
2. √2
3. 2
4. 3

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Video Explanation

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Explanatory Answer

log₅log₈(x² - 1) = 0

So, log₈(x² - 1) = 5⁰ = 1
log₈(x² - 1) = 1
x² - 1 = 8¹
x² = 8 + 1
x² = 9
x ± 3
From the options only 3 is possible

The question is " If log₅log₈(x² - 1) = 0, then a possible value of x is "

Hence, the answer is

Choice D3 is the correct answer.

 

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