This week in math we learned how to determine a perfect square trinomial and how to predict a missing part of the equation. To determine a perfect square trinomial these are some rules: the first term is a perfect square (including the invisible 1), The third term is a perfect square, and the second/middle term is the square root of the first and third term multiplied by each other and then multiplied by 2. Remember, the exponent has to be a perfect square too. Any exponent that is even is a perfect square.