List the excluded values of the rational equation. Type a numerical answer in the space provided. Do not include spaces in your answer. If there is more than one excluded value, separate them with a comma. For example, if the excluded values are 10, 12 and , type 0,3 . 1a+1/2a=1/a-3

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.