Question

(2x-16)^7 = 128

Answer 1

\(\left(2x-16\right)^7=128\\ \Rightarrow\left(2x-16\right)^7=2^7\\ \Rightarrow2x-16=2\\ \Rightarrow2x=18\\ \Rightarrow x=9\)

Answer 2

\(\left(2x-16\right)^7=128\)

\(\left(2x-16\right)^7=2^7\)

\(2x-16=2\)

\(2x=2+16\)

\(x=9\)