Answer:
D
Step-by-step explanation:
But basically, one by one you try moving the terms out of the radical.
75 is also 25 * 3 and since 25 has a perfect square root of 5 that goes out and 3 stays inside the radical.
x^3 is also x^2 * x and since x^2 has a perfect square root which is just x that goes outside while the remaining x stays inside.
y^9 is also y^8 * y and since we move variables out the radical in twos y^ goes outside the radical and y stays inside alone.
Finally, z is just z it can't be taken out so it stays inside the radical.
Hope that helps!
By dividing each general term by 3.
Example:
(3/3=1)
To find the distance between points, use the distance formula.
Distance formula:

Plug in your values for

using (-8, -7) and (8, -4) and solve.





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Answer:
Approximately 16.28 units.