Answer:
x^2-4x-4
Explanation:
Dimension of the painting=x
Frame=2in wide is. Each side of the square painting
Length of the painting= x-2
Area of a square=lenght^2
=(x-2)^2
Multiply
=(x-2)(x-2)
=x^2-2x-2x+4
Combine like terms
Area of the square painting=x^2-4x-4