ANSWER

EXPLANATION
The given exponentiial expression is

We simplify using the rule:

We apply this property to get:

We simplify to get;

We rewrite as a positive index to get;

Answer:
x=56
Step-by-step explanation:
Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.