Given xy =4and x2+y2=a which expression is equal to (x+y)2

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Drag the tiles to the correct boxes to complete the pairs. using the properties of integer exponents, match each expression with the correct equivalent expression.

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.