Factor by grouping.
-$$x ^ { 3 } - 7 x ^ { 2 } - 8 x + 56$$
A) $( x + 7 ) \left( x ^ { 2 } + 8 \right)$
B) $( x - 7 ) \left( x ^ { 2 } - 8 \right)$
C) $( x + 7 ) \left( x ^ { 3 } - 8 \right)$
D) $( x - 7 ) \left( x ^ { 2 } + 8 x \right)$

Name: Factor by grouping. -\[x ^ { 3 } - 7 x ^ { 2 } - 8 x + 56\] A) $( x + 7 ) \left( x ^ { 2 } + 8 \right)$ B) $( x - 7 ) \left( x ^ { 2 } - 8 \right)$ C) $( x + 7 ) \left( x ^ { 3 } - 8 \right)$ D) $( x - 7 ) \left( x ^ { 2 } + 8 x \right)$
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The Answer is B

Factor by Grouping x3−7x2−8x+56x ^ { 3 } - 7 x ^ { 2 } - 8 x + 56x3−7x2−8x+56

Factor by Grouping $x ^ { 3 } - 7 x ^ { 2 } - 8 x + 56$