Everychild. But you look stiff and stern.
Why don’t you sing,
And smile, and wear soft robes?
Mathematics.A mighty king
I serve, and it is mine to teach and train.
A trinomial is a perfect square when two of
its terms are perfect squares and positive,
and the third term is twice the product of
their square roots.
Everychild. [Who has put her fingers to her ears