The sentence "Every relation is a function" is not a mathematical statement.

Whether the sentence "The sum of any two sides of a triangle is always greater than the third side" is a statements. In case of a statement mention whether it is true or false.

Whether the  sentence "May God bless you!" is a statement. In case of a statement mention whether it is true or false.

Whether the sentence "Paris is in France" is a  statement. In case of a statement, mention whether it is true or false.

Whether the sentence "Each prime number has exactly two factors" is a statement. In case of a statement, mention whether it is true or false.

Whether the sentence "The equation $x^2+5\left|x\right|+6=0$ has no real roots" is a statement. In case of a statement, mention whether it is true or false.

Whether the sentence "$(2+\sqrt{3})$  is a complex number" is a statement. In case of a statement, mention whether it is true or false.

Whether the sentence "Is $6$ a positive integer?" is a statement. In case of a statement, mention whether it is true or false.

Whether the sentence "The product of $-3$ and $-2$ is $-6$" is a statement. In case of a statement, mention whether it is true or false.