[( 2 × 2 + 2 × 2 - 2 × 2 + 2) × 2 ] =
[( 4 + 2 × 2 - 2 × 2 + 2 ) × 2 ] =
[( 4 + 4 - 2 × 2 + 2 ) × 2 ] =
[( 4 + 4 - 4 + 2 ) × 2 ] =
[( 8 - 4 + 2 ) × 2 ] =
[( 4 + 2 ) × 2 ] =
6 × 2 =
[tex]\boxed{\bold{12}}[/tex]
[(2×2+2×2-2×2+2) ×2]=
[(4+4-4+2)×2=
(8-4+2)×2=
(4+2)×2=
6×2=12
