y(x) = c₁.e^2x - 2x

y(x) = c₁.e^-x + c₂.e^4x + (1/9)x -4/9

y(x) = c₁.e^x + c₂.x.e^x +2x -3

y(x) = c₁.e^2x + c₂.x.e^4x - (1/3)x -9/4

y(x) = c₁.e^-x + c₂.e^-3x + (1/3)x -4/9