Solution:
Coefficient of in the expansion of S is
Divide by to obtain
(1)
Similarly, coefficient of is
Divide by to obtain
(2)
Subtract (2) from (1) to obtain
From
If coefficient of and in the expansion of in powers of x are both zeros, then is equal to
Coefficient of in the expansion of S is
Divide by to obtain
(1)
Similarly, coefficient of is
Divide by to obtain
(2)
Subtract (2) from (1) to obtain
From