Answer :

Answer:

Step-by-step explanation:

[tex]7^{-2}\\[/tex]

Write the reciprocal to make the power positive

[tex]\frac{1}{7^2}[/tex]

The multiplicative inverse of [tex]\frac{1}{7^2}\ is\ 7^2[/tex]

[tex] {7}^{2} [/tex]

Because

[tex] {7}^{ - 2} = \frac{1}{ {7}^{2} } [/tex]

If we multiply both :

[tex] {7}^{2} \times \frac{1}{ {7}^{2} } = 1[/tex]

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