What is the sum of the polynomials? the 2 by 2 matrix row 1, blank 11 x squared minus 5 row 2, plus x plus 4
Answer
A
10 x squared minus 9
B
11 x squared minus x minus 9
C
11 x squared plus x minus 1
D
12 x squared minus 1
Explanation
Add the polynomials by combining like terms: 11x² stays as it is, and the x-term is +x. Add the constants: −5 + 4 = −1. The sum is 11x² + x − 1, which is choice C.
AI-written and checked against the verified answer.