Which sum or difference is modeled by the algebra tiles?



A.
(-x2 − 2x + 4) − (x2 + 2x + 1) = -2x2 − 4x + 3
B.
(-x2 − 2x + 4) + (-x2 − 2x + 1) = -2x2 − 4x + 3
C.
(-x2 − 2x + 4) − (x2 − 2x − 1) = -2x2 − 4x + 3
D.
(-x2 − 2x + 4) + (-x2 + 2x + 1) = -2x2 − 4x + 3

Which sum or difference is modeled by the algebra tiles A x2 2x 4 x2 2x 1 2x2 4x 3 B x2 2x 4 x2 2x 1 2x2 4x 3 C x2 2x 4 x2 2x 1 2x2 4x 3 D x2 2x 4 x2 2x 1 2x2 4 class=