Please show steps and explain how to solve. Please include formulas or ideas that are important

Solve the ODEs below using the method of separation of variables; use variable substitut tions if appropriate, including problems without a suggested substitution. (a) y' = y(3 - y) y ( b) y = suggested substitution: u = y/x x+ xy (c) y = x- y (d) y' = (x-y-2)2 2xy (e) y' = 2 2 - y2