Question

Sa se determine numarul natural x din:
2 la puterea x minus 16=2 la puterea 4

Answer 1

2^x-16=2^4
2^x-16=16
2^x=32
2^x=2^5
x=5

Answer 2

$2^x-16=2^4 \\ 2^x-16=16 \\ 2^x=16+16 \\ 2^x=32 \\ 2^x=2^5 \\ x=5$