The area of a square is 4x2 + 20xy + 25y2. Find the perimeter.

Step-by-step explanation:

1) The area of a square is 4x^2 + 20xy + 25y^2 =

4x^2+10xy+10xy+25y^2=2x (2x+5y) + 5y (2x+5y) = (2x+5y) (2x+5y) = (2x+5y) ^2

2) Perimeter of square = 4a (a is a side of square)

P = 4 (2x+5y) = 8x+20y