Assuming that $x\neq -5$, simplify $\frac{(2x+10)^7}{(x+5)^6}$
(2x + 10)^7 [ 2 ( x + 5) ] ^7 2^7 ( x + 5)^7
_________ = ______________ = _____________ = 128 ( x + 5) = 128x + 640
( x +5 )^6 ( x + 5 )^6 ( x + 5)^6
