(5x + 3) / (x³ - x ) = p/x + q/(x + 1} + r/(x- 1)
(5x + 3) / (x³ - x ) = {p(x²-1) + qx(x-1)+ rx(x+1)} / (x³ - x )
5x + 3) / (x³ - x ) = {px²-p) + qx²-qx)+ rx²+rx)} / (x³ - x )
5x + 3) / (x³ - x ) = {(p+q+r)x²+(-q+r)x-p )} / (x³ - x )
p+q+r=0
-q+r=5; r=5+q
-p=3; p=-3
p+q+r=0;
p+q+5+q=0
2q=-p-5
q=(3-5)/2=-1
r=5+q=5-1=4
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(5x + 3) / (x³ - x ) = p/x + q/(x + 1} + r/(x- 1)
(5x + 3) / (x³ - x ) = {p(x²-1) + qx(x-1)+ rx(x+1)} / (x³ - x )
5x + 3) / (x³ - x ) = {px²-p) + qx²-qx)+ rx²+rx)} / (x³ - x )
5x + 3) / (x³ - x ) = {(p+q+r)x²+(-q+r)x-p )} / (x³ - x )
p+q+r=0
-q+r=5; r=5+q
-p=3; p=-3
p+q+r=0;
p+q+5+q=0
2q=-p-5
q=(3-5)/2=-1
r=5+q=5-1=4