For examples 1 through 5, find the general solution for the given differential equations. Calculus II, differential equations

1. dy/dx = x^(2) + 4x

2. x^(2) dy/dx = (x+1)y

3. (x)(dy/dx) - 3y = x^2

4. (e^(2x)) (dy/dx ) + 2e^(2x) y = 4e^2x

5. (x+2)dy/dx = 2y-1