$(6$ pt $)3.$ Set up and solve a system of equations to find the values of the coefficients in the following:

$\frac{9x^2-4x22}{(2x1)(x^{2}5)}=\frac{A}{2x1}\frac{BxC}{x^{2}5}$

$(8pt)4.$ Evaluate ${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{x^{3}3x^{2}3x1}{x^{2}1}dx$