Differential Equations proficient (only). I am happy to rate every answer based on the conditions below.

4. Verify whether the following equation is exact. If possible, solve the equation. a) (2rex ty' + 2xy)dx + (2yer ty' + x2 ) dy = 0 b) (2xe ty + 2xy)dx + (2yer ty + x)dy = 0 c) For both examples explain steps of your solution in your own words (line by line)