### Calculus Omens

Stu came to my office hours today to ask questions about the calculus exam that is happening tomorrow.

I led Stu through a max-min calculation. Stu was OK at taking the derivative and setting it equal to zero. But then he had to solve

In a later problem, we worked together on factoring it, and we got to (

Good luck on that exam tomorrow.

I led Stu through a max-min calculation. Stu was OK at taking the derivative and setting it equal to zero. But then he had to solve

*x*^{2}- 3*x*- 4 = 0. And he was stuck. Could not factor it.In a later problem, we worked together on factoring it, and we got to (

*x*+ 4)^{2}(*x*- 4) = 0. He couldn't solve for*x*.Good luck on that exam tomorrow.