Answer:
A. -4x -1
C. -2 +1 -4x
Explanation:
You want expressions that are equivalent to -1/2(4 -2 +8x).
Distributive property
The distributive property tells you that multiplication distributes over addition:
-1/2(4 -2 +8x) = -1/2(4) +(-1/2)(-2) +(-1/2)(8x)
= -2 +1 -4x . . . . . . . matches choice C
Combining like terms, we have ...
= -1 -4x
Writing the terms in order of decreasing powers of x give us ...
= -4x -1 . . . . . . . . matches choice A