Will give brainliest!

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.

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.