Find $( 3 x - 7 ) ^ { 3 }$

Multiple Choice

Find $( 3 x - 7 ) ^ { 3 }$ . Don t forget that $( 3 x - 7 ) ^ { 3 }$ means (3 x $-$ 7) (3 x $-$ 7) (3 x $-$ 7) .

A) $27 x ^ { 3 } - 189 x ^ { 2 } + 147 x - 343$
B) $27 x ^ { 3 } - 189 x ^ { 2 } + 441 x - 343$
C) $27 x ^ { 3 } - 63 x ^ { 2 } + 441 x - 343$
D) $27 x ^ { 3 } - 63 x ^ { 2 } + 441 x + 343$
E) none of these