Question

Resolva a exponenciais

a)4^2x=256

b)2^x+1=256

Answer 1

$a) \\ {4}^{2x} = 256 \\ {4}^{2x} = {4}^{4} \\ 2x = 4 \\ x = 2 \\ \\ b) \\ {2}^{x + 1} = 256 \\ {2}^{x + 1} = {2}^{8} \\ x + 1 = 8 \\ x = 8 - 1 \\ x = 7$