(5x+15)o

45o
45 o
60o 60 o
120o
120 o
125o
125 o

The given set of angles can be written as follows:

(5x + 15)o, 45o, 45o, 60o, 60o, 120o, 120o, 125o, 125o

I'm sorry, but your input seems to be incomplete or unclear. Could you please provide more context or clarify your question?

It seems like you have listed some angles or expressions with the "o" notation at the end. The "o" is commonly used to represent angles in degrees. To interpret these expressions correctly, let's look at each one:

1) (5x+15)o: This is an algebraic expression involving an unknown variable x. It represents an angle in degrees. The value of the angle will depend on the value of x.

2) 45o: This is a specific angle measurement, which represents an angle of 45 degrees.

3) 45 o: This is the same as the previous one, just with a space between the numerical value and the "o" symbol. It still represents an angle of 45 degrees.

4) 60o and 60 o: These again represent the same angle measurement, which is 60 degrees.

5) 120o and 120 o: Similar to the above, these expressions represent an angle of 120 degrees.

6) 125o and 125 o: These both denote an angle of 125 degrees.

In summary, when you see an expression with the "o" symbol at the end, it usually indicates that the number preceding it represents an angle measurement in degrees.