Use a General Strategy for Factoring Polynomials
-Find the Formula $2 a ( a + b ) ( a - b )$

Use a General Strategy for Factoring Polynomials
-Find the formula for the volume of the region outside the smaller rectangular solid and inside the larger rectangular solid. Express the volume in factored form.

A) $2 a ( a + b ) ( a - b )$
B) $2 a \left( a ^ { 2 } + b ^ { 2 } \right)$
C) $( 2 a + b ) ( 2 a - b )$
D) $2 a \left( a ^ { 2 } - b ^ { 2 } \right)$