Find the Inverse Laplace Transform of the $folloMng$ $1.$ $\dfrac {3s-8} {4s^{2}+25}$ $2.$ $\dfrac {3\left(s^{2}-2\right)^{2}} {2s^{5}}$ $3.$ $\dfrac {2s-5} {4s^{2}+25}+\dfrac {4s-18} {9-s^{2}}$ $4.$ $\dfrac {5s-10} {9s^{2}-16}$ $5.$ $\dfrac {1} {4s}+\dfrac {16} {1-s^{2}}$