Y2 + x2+x+5=0 pls give step by step answer and proof

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Find the multiplicative inverse of 8-12i

Which of these tools or constructions is used to inscribe a hexagon inside a circle?