Use Long Division to Divide $\left( x ^ { 3 } - 343 \right) \div ( x - 7 )$

Use long division to divide.​ $\left( x ^ { 3 } - 343 \right) \div ( x - 7 )$ ​

A) ​ $x ^ { 2 } + 7 x + 49 , x \neq 7$
B) $x ^ { 2 } - 7 x + 49 , x \neq 7$
C) $x ^ { 2 } + 7 x - 49 , x \neq 7$
D) $x ^ { 2 } - 7 x - 49 , x \neq 7$
E) $- x ^ { 2 } + 7 x + 49 , x \neq 7$

Correct Answer:

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