Answer:
4,9
Step-by-step explanation:
i looked it up on a website,uhhhhh i don't know if its completely write soooo.....
For this case we have:
By properties of the radicals 
So:
.
Now, for power properties we have:

Thus, 
So:
in its radical form
Answer:
in its simplest form.
in its radical form
Answer:
2.13 X 104 square acres
Step-by-step explanation:
Divide 6.4 acres by 3 miles = factor of 2.13
Therefore the answer must be 2.13 X 104 square acres
(x - 8)² + (y - 6)² = 5²
(x - 8)² + (y - 6)² = 25 ← answer