Question

${3}^{x } + {3}^{x + 1} = 108$
answer this question please ​

Answer 1

Given

${3}^{x} + {3}^{x + 1} = 108 \\ {3}^{x} + {3}^{x} .3 = 108 \\ {3}^{x} (1 + 3) = 108 \\ {3}^{x} .4 = 108 \\ {3}^{x} = 27 \\ {3}^{x} = {3}^{3} \\ x = 3$

Hope it helped.....

Mark my answer as Brainliest!!!!!!

#bal