Write $f ( x ) = x ^ { 3 } + 5 x ^ { 2 } + 15 x + 28$ in the form f (x)= (x - k)q(x)when k = -3.
A) $f ( x ) = ( x + 3 ) \left( x ^ { 2 } + 2 x + 9 \right)$
B) $f ( x ) = ( x + 3 ) \left( x ^ { 2 } + 2 x + 9 \right) + 1$
C) $f ( x ) = ( x - 3 ) \left( x ^ { 2 } + 2 x + 9 \right) - 1$
D) $f ( x ) = ( x - 3 ) \left( x ^ { 2 } - 2 x + 9 \right) + 1$
E) $f ( x ) = ( x + 3 ) \left( x ^ { 2 } - 2 x + 9 \right) - 1$

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The Answer of Write $f ( x ) = x ^ { 3 } + 5 x ^ { 2 } + 15 x + 28$ in the form f (x)= (x - k)q(x)when k = -3.
A) $f ( x ) = ( x + 3 ) \left( x ^ { 2 } + 2 x + 9 \right)$
B) $f ( x ) = ( x + 3 ) \left( x ^ { 2 } + 2 x + 9 \right) + 1$
C) $f ( x ) = ( x - 3 ) \left( x ^ { 2 } + 2 x + 9 \right) - 1$
D) $f ( x ) = ( x - 3 ) \left( x ^ { 2 } - 2 x + 9 \right) + 1$
E) $f ( x ) = ( x + 3 ) \left( x ^ { 2 } - 2 x + 9 \right) - 1$

Write f(x)=x3+5x2+15x+28f ( x ) = x ^ { 3 } + 5 x ^ { 2 } + 15 x + 28f(x)=x3+5x2+15x+28

Write $f ( x ) = x ^ { 3 } + 5 x ^ { 2 } + 15 x + 28$