Exponents in mathematics is a term that refers to the powers in which a number is raised. Usually the number representing the exponents is usually written upwards in lower font to the left-hand side of the main number or value.
<h3>solving the problem</h3>
x . x is same as x multiplied by x
therefore x . x = x * x
since the x is two the product is written as . where the two shows how many times x appeared.