(-2xy + 3 )(xy-1) e cần câu trả lời gấp ạ

Aportion of a line bounded by two points is defined as

Use circumcenter theorem to solve for the given values

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.