The sum or difference is modeled by the algebra tiles will be –2x² + 2. Then the correct option is D.
The complete question is attached below.
What is Algebra?
The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
From the algebra tiles, the equations will be
(-x² + 2x + 3) and (-x² – 2x – 1)
Then the sum or difference is modeled by the algebra tiles will be
(-x² + 2x + 3) + (-x² – 2x – 1)
–x² + 2x + 3 – x² – 2x – 1
–2x² + 2
Then the correct option is D.
More about the Algebra link is given below.
https://brainly.com/question/953809
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