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If `x = "log"_(0.1) 0.001, y = "log"_(9) 81`, then `sqrt(x - 2sqrt(y))` is equal toA. `3-2sqrt(2)`B. `sqrt(3)-2`C. `sqrt(2)-1`D. `sqrt(2)-2` |
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Answer» Correct Answer - C We have, `x = "log"_(0.1) 0.001 " and " y = "log"_(9) 81` `rArr x = "log"_(0.1) (0.1)^(3) " and" y = "log"_(9)9^(2)` `rArr x = 3 and y = 2` `therefore sqrt(x-2sqrt(y)) = sqrt(3-2sqrt(2)) = sqrt((sqrt(2)-1)^(2)) = |sqrt(2)-1| = sqrt(2)-1` |
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