Solve the IVPs by the Laplace transform. If necessary, usepartial fraction expansion as in Example 4 of the text. Show alldetails. Solve 8 and 9 please. 8. \( y^{\prime \prime}-4 y^{\prime}+4 y=0, \quad y(0)=8.1, \quad y^{\prime}(0)=3.9 \) 9. \( y^{\prime \prime}-4 y^{\prime}+3 y=6 t-8, \quad y(0)=0, \quad y^{\prime}(0)=0 \) 1 answer