Question

tìm x

2017⁰ + 2^x-3 = 9

Answer 1

2017⁰ + 2^x-3 = 9

1 + 2^x-3 = 9

2^x-3 = 9 - 1

2^x-3 = 8

2^x-3 = 2³

^{\(\Rightarrow\)} x - 3 = 3

x = 3 + 3

x = 6

Answer 2

\(2017^0+2^{x-3}=9\)

=> \(1+2^{x-3}=9\)

=> \(2^{x-3}=9-1\)

=> \(2^{x-3}=8\)

=> \(2^{x-3}=2^3\)

=> x-3= 3

=> x= 6