The plus sign means that we have to sum all the terms inside of the second parenthesis, while the minus sign means that we have to change all the signs inside the last parenthesis:

Now we only have to gather all like terms:

Step 1) Plot the points (you do know how to plot, do you?)
Step 2) Take that point and move it 8 squares to left then 9 down
Step 3) You should get (-3,-4). If you didn't let me know. :)
Step 4) ABout how many units are they away from each other?
Step 5) Hint: add the units you needed to move.
Hope this helps. Let me know if it didn't. :)
Answer:
I wanna say B. not 100% sure
sorry if wrong
Step-by-step explanation:
Using the Pythagorean theorem we get:

Simplifying the above result we get:

Subtracting 64 from the above equation we get:

Therefore:

Answer: