Algebra-1

Question Analysis
This question tests the ability to subtract polynomials with higher degree terms by changing the signs of the terms in the subtrahend and then combining like terms.

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

Step-by-step Solution
1. Start with the given expression:
2. Change the signs of the terms in the subtrahend: