Answer: 
 .
.
Explanation: We are given expression 
 .
.
And 
 expression is converted in
 expression is converted in 
 .
.
Now, we need to transform the expression into a single exponent expression using the properties of exponents.
We know, according to the properties of exponents

Applying same rule in given expression, we get 

On simplifying exponents, we would get t in exponent.
= 
 .
.