5001Je
5001Je
05.06.2021 • 
Mathematics

If {2019}^{x} + {2019}^{-x} = 3, the value of \sqrt{\dfrac{{2019}^{6x} - {2019}^{-6x}}{{2019}^{x} - {2019}^{-x}}} is: a) 3
b) 6
c) 9
d) 12

Help please!!! :( ​

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