Factor completely. 4x^2 - 36 ( 2x + 6 ) ( 2x - 6) (2x + 18) ( 2x - 18) ( 4x + 4) (x - 9) ( 4x + 16) ( 4x -16) i don't know

Which representation has a constant of variation of -2.5

Which expression shows the sum of the polynomials with like terms grouped together

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.