Make an equation to represent the area of a square whose sides are given by the expression x+y

B. area = x^2 + 2xy + y^2

Step-by-step explanation:

Area of square with side s is s^2.

This square has side x + y, so

area = (x + y)^2

area = (x + y)(x + y)

area = x^2 + xy + xy + y^2

area = x^2 + 2xy + y^2

B

Step-by-step explanation:

area of a square = s² ( s is the side length )

here s = x + y, hence

area = (x + y)² ← expand using FOIL )

        = x² + xy + xy + y² = x² + 2xy + y² → B