\

To find the difference; subtract the coefficients of x², x and constants respectively.

Coefficient of x² in:  

1^st expression is (3 + i) \ \

2^nd expression is \ \

Subtract the x² coefficients. i.e.,  

Coefficient of x in: 

1^st   expression is

2^nd expression is 

Subtract the x coefficients. i.e.,

Coefficient of Constants in: 

1^st   expression is (4 + i) \ \

1^st   expression is 

Subtract constants. i.e., (7 + i) \ \

The solution is .