The variables a, b, and c represent polynomials where a = x2, b = 3x + 2, and c = x – 3. what is ab – c2 in simplest form?

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.