im trying to rearrange an equation to make y the subject to then use partial fraction expansion and laplace inverses to solve.
so far i have simplified to give
y(S^4 + 3S^2 -12) = 104/s+3 -24 +12S^3 - 3S^2 + 25S -15
i know i need to divide by the bracketed terms on the left but i dont know how to do this. i.e what is (104/s+3)/(S^4 + 3S^2 -12)
do i need a common denominator
any help would be appreciated