Question

if 3^x=81 then find 9^x-4​

Answer 1

Step-by-step explanation:

${3}^{x} = 81 \\ {3}^{4} = {3}^{x} \\ x = 4 \\ {9}^{x - 4} \\ {9}^{0} = 1$

Answer 2

Answer:

Given,

3^x=81

We know that, 3^4=81

So, x=4

Then 9^x-4=9^4-4

=9^0

=1

I hope it helps......