Use Substitution to Factor the Polynomial Completely $8 x ^ { 4 } - 6 x ^ { 2 } - 9$

Multiple Choice

Use substitution to factor the polynomial completely.
- $8 x ^ { 4 } - 6 x ^ { 2 } - 9$

A) $\left( 2 x ^ { 2 } - 3 \right) \left( 4 x ^ { 2 } + 3 \right)$
B) $\left( 2 x ^ { 2 } + 1 \right) \left( 4 x ^ { 2 } - 9 \right)$
C) $( 4 x - 3 ) ( 2 x + 3 )$
D) $\left( 8 x ^ { 2 } - 3 \right) \left( x ^ { 2 } + 3 \right)$