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12-05-2020
Mathematics

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12-05-2020

Answer:

1/28^2

7^-2/ 4^2

Step-by-step explanation:

We know that a^b * c^b = (ac)^b

4^-2 * 7^-2

(4*7)^-2

28 ^ -2

We know that a^-b = 1/a ^b

1/28^2

We can also leave it as

4^-2 * 7^-2

1/ 4^2 * 7^-2

7^-2/ 4^2

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