Question

( begin{array}{c}x^{2}+3 x+1=frac{A}{(x-1)}+frac{B}{(x-1)^{2}}+frac{c}{(x-1)^{3}}+frac{D}{(x-1)^{4}}+frac{E}{(alpha-1)^{3}} (x-1)^{5} & text { fotal } 5 text { partial foactions. }end{array} )

# x+3x+1 (20) The number of partial fractions of * is (a) 5 (b) 4 (c) 3 (d) 2

Solution