A) 5
B) 4
C) 9
D) None of these
Correct Answer: A
Solution :
Given, \[\frac{{{x}^{4}}}{{{x}^{9}}}={{5}^{-5}}\] \[\Rightarrow \,\,\,\,\,\,\,{{x}^{(4-9)}}={{x}^{-5}}={{5}^{-5}}\] On comparing base, we get \[x=5\]You need to login to perform this action.
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