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