Find the value of 5^-3 x 2^-1

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.

What is x3+3x2−16x−48 divided by x−1?

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show