Simplify this expression. 2/(x-y)+3/(x+y)-5/(y-x)-(7x-9y)/(y^ (2)-x^(2))=?/(y^2-x^2 Find the question mark (?)

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.

Explain why the two figures below are not similar. use complete sentences and provide evidence to support your explanation. (10 points) figure abcdef is shown. a is at negative 4, negative 2. b is at negative 3, 0. c is at negative 4, 2. d is at negative 1, 2. e

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.