Question

Question 3(Multiple Choice Worth 4 points)

Which expression is equivalent to 73.7-57
0 72
0 77
17
글

Answer 1

Answer:
`(1)/(7^(2))`

Explanation:

Using the exponent rule
`a^(b) \cdot a^(c)=a^(b+c)`, we get that

`7^(3) \cdot 7^(-5)=7^(-2)`

Then, using the exponent rule
`a^(-b)=(1)/(a^b)`, we get that

`7^(-2)=\boxed{(1)/(7^(2))}`