Algebra-1

Question Analysis
This question tests the student's ability to subtract polynomials by changing the sign of each term in the polynomial being subtracted and then combining like terms.

Key Concept Explanation
To subtract polynomials, change the sign of each term in the polynomial being subtracted, convert the subtraction to addition, and then combine like terms.

Step-by-step Solution
1. Start with the expression:
2. Change the sign of each term in the second polynomial: