Question

Resolva as equações exponenciais:

$a)2^x=8\\\\b)2^x=2\\\\c)2^x=64\\\\d)2^x=156\\\\e)2^x=128\\\\f)3^x=81$

Answer 1

Resposta:

$a) 2^x=8\\\\2^x=2^3\\\\x=3$

$b) 2^x=2\\\\2^x=2^0\\\\x=1$

$c)2^x=64\\\\2^x=4^3\\\\x=6$

$e) 2^x=128\\\\2^x=2^7\\\\x=7$

$f)3^x=81\\\\3^x=3^4\\\\x=4$