Question

2^x + 15 = 31

Answer 1

\(2^x=31-15=16=2^4\\ \Rightarrow x=4\)

Answer 2

\(2^{x^{ }}=31-15\)

\(2^x=16\)

\(2^{x^{ }}=2^4\)

\(\Rightarrow x=4\)

Answer 3

2⁴

Answer 4

2^x=31−15

=16=2⁴ 

➩x=4

2^x =2⁴

Answer 5

2 mũ 4 nhé