What reason does the narrator of the tell tale heart give for killing the old man

Animal control is the right answer

Ambiguous: having two or more possible meanings. someone who is ambidextrous is able to use both hands well.

Rational solutions. often the  solutions  to quadratic equations are  rational  numbers, which are integers or fractions. the requirement for the  solution  to be an integer or fraction is that √(b2  − 4ac) is a whole number.