Question

please fast.
I meed urgently​

Answer 1

Step-by-step explanation:

$(5 + {5}^{ - 1} )(5 - {5}^{ - 1} ) \\ = ( {5})^{2} - ( {5}^{ - 1} ) ^{2} \\ = 25 - {5}^{ - 2} \\ = 25 - \frac{1}{25} \\ = \frac{625 -1}{25} \\ = \frac{624}{25} \\ = 24 \frac{24}{25}$