The difference in the two polynomials as described in the task content is; 7y² + 8xy -3.
The polynomial given in the task content is;
(7y² + 6xy) – (–2xy + 3)
Hence, upon evaluation, the expression is
7y² + 6xy +2xy -3
7y² + 8xy -3
Read more on polynomials;
https://brainly.com/question/5659345
#SPJ1