Question

resolva as seguintes equaçoes exponenciais com icognita x:
a)125'x=625
b)2'x=1
c)2'x=64
d)2'4x-2x=8

Answer 1

$125^x= 625 \\ \\ (5^3)^x= 5^4 \\ \\ 3x= 4 \\ \\ x= 4/3$

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

$2^x= 64 \\ \\ 2^x= 2^6 \\ \\ x= 6$

$2^4^x^-^2^x=8 \\ \\ 2^2^x= 2^3 \\ \\ 2x=3 \\ \\ x= 3/2$