Find the solutions to the equation below 6x^2+5-4=0

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.

Which of the following points is a solution to the system of equations shown? y - x = -1 x + y = -5

Arectangular yard has area 96 square feet. if the width of the yard is 4 feet less than the length