I thought the answer is PTA but that isn't an option so I don't know, does anyone else have an idea and possibly an explanation?

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.

Complete the synthetic division problem below.what is the quotient in polynomial form 2/16 -16

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.