Question

9^x-2=√27



go go go pfvr

Answer 1

9^x-2=√27                        devemos colocar ambos na base 3
(3²)^x-2 = 27^1/2              9=3x3=3²         √27=27^1/2
(3²)^x-2=(3³)1/2                cancela as base e multiplica os expoentes
2x-4 = 3/2
2x=3/2+4
2x=11/2
x=(11/2)/2
x=11/2 x 1/2
x=11/4