Question

All of the following expressions are equivalent to 12w + 6, except:

(3 + 6 w)2
6(1 + 2 w)
-1(-12 w - 6)
-1(12 w - 6)

Answer 1

Except for -1 (12w - 6).

Answer 2

The last one is incorrect because -1 x 12 = -12