Here you go! Hope this helps!
Answer:

Step-by-step explanation:
I'm going to write it so I can see it better:

You can use the difference of squares formula:

Answer:
the second one to the right
Step-by-step explanation:
the first one makes a square
the third sides are too tiny
the last one just doesnt make anything
I think it’s B. but i’m not 100% sure
There are 5. In 5000, there are 5 thousandths.
~Silver