Let a and b be two regular languages over the same alphabet ? . prove that the difference of a and b, ie. the language a\b = {w: w e a and w e b} is a regular language.

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

In the geometric progression –3, 12, −48… what term is 3,072?