Ab and c are polynomials, when a=n, b=2n+6,and c =n^2-1 what is ab-c in simplest form

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

Graph the system of equations on your graph paper to answer the question. {y=−x+4y=x−2 what is the solution for the system of equations? enter your answer in the boxes.

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i