Question

find the value of x in each of the following
$3 {}^{x + 1 \: \: = 81}$
answer quickly ​

Answer 1

Answer:

x = 3

Step-by-step explanation:

Given,

3ˣ⁺¹ = 81

=> 3ˣ⁺¹ = 3⁴

[If the bases are the same then the indices are equal to each other]

=> x + 1 = 4

=> x =4 - 1

=> x = 3

Hope it helps!