Pls help me i beg and answer fast; Factor these trinomials when a is not equal to one 3. 2p^2 - 11p + 14
4. 5x^2 - 45
5. 4s^2 - 20s + 25
6. 5x^2 + 11x + 2
7. 2x^2 - 32
8. 7x^2 - 19x - 36
9. 2x^2 - x - 15
10. 5z^2 - 20z + 20

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.