Under which of the following operations are the polynomials 8a + 14 and
3b - 9 not closed?

A. Division
B. Subtraction
C. Addition
D. Multiplication

Answer :

The polynomials are not closed under A. division because you subtract 9 from 3b, you add 14 to 8a, and you multiply 3 and b as well as 8 and a.

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