The sum of 2 number is 42 and when you switch the order the difference is 5

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

The collection of beautiful oil paintings currently on display at an art gallery well defined; set not well defined; not a set