I don't understand this exponential stuff

Question

Exponential

Answer 1

Exponential is *10^x and it "adds some zeros to number".

Answer 2

For example 2*e10. 2 is the number with which we multiple 10 of power 10. 'e' is related to '10 at power of'. The number after e is the power. You can write it as 2*10^10.

Answer 3

Example:
2^2=4
2×2=4

2^3
2×2×2=8

5^3
=5×5×5
=125