Which polynomial represents a perfect square polynomial. select all that apply
x^2 + 64
9x^2 - 64
16x^2 - 24x + 9

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.