In the expansion of the polynomial $( x + 2 ) ^ { 7 }$, what is the coefficient of $x ^ { 5 }$? [2 points] (1) 42 (2) 56 (3) 70 (4) 84 (5) 98
In the expansion of the polynomial $( x + 2 ) ^ { 7 }$, what is the coefficient of $x ^ { 5 }$? [2 points]\\
(1) 42\\
(2) 56\\
(3) 70\\
(4) 84\\
(5) 98