Determine whether the following sentence is a statement or not.
\(\dfrac{31}{8}\text{ is an improper fraction}.\)
\(\text{90 is not a perfect square}.\)
\(6\times 0\neq6+0.\)
\(a^2-b^2=(a-b)(a+b).\)
\(\text{A pentagon has 6 sides}.\)
There is something wrong with this question.
