Answer:
The coefficients are:




Explanation:
Required
The coefficient of a
To get the coefficient, we simply remove a. The remaining terms is the required coefficient
Solving (a):

Remove a
5x:
Hence, the coefficient is 5x
Solving (b):

Remove a
-4b
Hence, the coefficient is -4b
Solving (c):

Remove a
38bc
Hence, the coefficient is 38bc
Solving (d):

Remove a

Hence, the coefficient is
