Determine which statement completes each open sentence:

32+8+1
15 (1+2)
4²
4.2
3(x - 4 + x)
when x = 4
111
3(x-4 + x)
when x = 2
32-1
15 +1 +2
3x4+x
3x4+x
1. is equal to
2. is NOT equal to