SOLUTION:
…….(i)
Comparing coefficients of A + C = 0 …….(ii)
Comparing coefficients of , –A + B = 1 …….(iii)
Comparing constant terms, –B + C = 0 …….(iv)
Solving eq. (ii), (iii) and (iv), we get A = B = and C =
Putting the values of A, B and C in eq. (i),
=