Algebra 1 EOC Prep (1.1 - 3.2)

In the diagram below, the length of a square is (3x + 7) units.  The dimensions of the cut-out rectangle are x by (2x + 5) units.  Which choice expresses the area of the shaded regions, in square units?

Select ALL the operations under which polynomials are closed

• Addition

• Subtaction

• Multiplication

• Division

Polynomials are closed under some operations because the result of those operations will [FILL IN THE BLANK] be a polynomial

• Sometimes

• Always

• Never