Find the general solution to the following differential equation:
a. ( y(x) = Ce⁻²ˣ + De³ˣ )
b. ( y(x) = Ce⁻²ˣ + De²ˣ )
c. ( y(x) = Ce²ˣ + De⁻³ˣ )
d. ( y(x) = Ce²ˣ + De⁻²ˣ )