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Can you please do a deep explanation of how to solve these kinds of problems

Can you please do a deep explanation of how to solve these kinds of problems-example-1
User Allan McLemore
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1 Answer

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The given expression is 7^-2

- 2 is the exponent in this case

recall this rule of exponents,


\begin{gathered} a^{-\text{ n}}\text{ = }(1)/(a^n) \\ \text{This means that } \\ 7^{-\text{ 2}}\text{ = }(1)/(7^2) \\ =\text{ }(1)/(49) \end{gathered}

User Kenju
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