Where $m$ and $n$ are integers, $$\left(x^2 + 2y\right)^7$$ In the expansion of this expression, if one of the terms is $mx^ny^2$, what is the sum $m + n$? A) 56 B) 64 C) 72 D) 86 E) 94
Where $m$ and $n$ are integers,
$$\left(x^2 + 2y\right)^7$$
In the expansion of this expression, if one of the terms is $mx^ny^2$, what is the sum $m + n$?\\
A) 56\\
B) 64\\
C) 72\\
D) 86\\
E) 94