Which sum or difference is modeled by the algebra tiles?
A.(x^2 - 2x + 3) - (-x^2 - 4x - 2) = 2x-1
B.(x^2 - 2x - 3) + (x^2 - 4x + 2) = 2x - 1
C. (x^2 - 2x - 3) - (x^2 + 4x + 2) = 2x-1
D. (x^2 - 2x-3) +(-x^2 + 4x + 2) = 2x - 1

Which sum or difference is modeled by the algebra tiles Ax2 2x 3 x2 4x 2 2x1 Bx2 2x 3 x2 4x 2 2x 1 C x2 2x 3 x2 4x 2 2x1 D x2 2x3 x2 4x 2 2x 1 class=