Factor the Difference of Squares
- $\left( 16 x ^ { 4 } - 81 \right)$

Factor the Difference of Squares
- $\left( 16 x ^ { 4 } - 81 \right)$

A) $\left( 4 x ^ { 2 } + 9 \right) ( 2 x + 3 ) ( 2 x - 3 )$
B) $\left( 4 x ^ { 2 } + 9 \right) \left( 4 x ^ { 2 } - 9 \right)$
C) $( 2 x + 3 ) ^ { 2 } ( 2 x - 3 ) ^ { 2 }$
D) $\left( 4 x ^ { 2 } + 9 \right) \left( 4 x ^ { 2 } + 9 \right)$