The variables a, b,and c represent polynomials where a=x2, b=3x, and c=x-3 what is ab-c^2 in its simplest form

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

50 people men and women were asked if they watched at least one sport on tv. 20 of the people surveyed are women, but only 9 of them watch at least one sport on tv. 16 of the men watch at least one sport on tv. make a a two-way table and a relative frequency table to represent the data.

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n