I need help asap plz it will mean alot to mean

Ineed someone to me answer my question i have to have this done and knocked out

Find the solution(s) to x^2-14+49=0

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.