将-4、-3、-2、-1、0、1、2、3、4填在一个九宫格里使中间那个数是-2,并且横排、竖排、斜对角相等

1:(2 - 3 + 4) × 82:((2 - 3) + 4) × 83:(2 - (3 - 4)) × 84:2 × (3 × (8 - 4))5:2 × 3 ×(8 - 4)6:(2 × 3) × (8 - 4)7:(2 + 4 - 3) × 88:((2 + 4) - 3) × 89:(2 + (4 - 3)) × 810:(2 × (8 - 4)) × 311:2 × (8 - 4) × 312:2 × ((8 - 4) × 3)13:3 × (2 × (8 - 4))14:3 × 2 ×(8 - 4)15:(3 × 2) × (8 - 4)16:3 × (4 + 8 ÷ 2)17:3 × (4 + (8 ÷ 2))18:3 × (8 ÷ 2 + 4)19:3 × ((8 ÷ 2) + 4)20:(3 × (8 - 4)) × 221:3 × (8 - 4) × 222:3 × ((8 - 4) × 2)23:(4 + 2 - 3) × 824:((4 + 2) - 3) × 825:(4 + (2 - 3)) × 826:(4 - 3 + 2) × 827:((4 - 3) + 2) × 828:(4 - (3 - 2)) × 829:(4 + 8 ÷ 2) × 330:(4 + (8 ÷ 2)) × 331:8 × (2 - 3 + 4)32:8 × ((2 - 3) + 4)33:8 × (2 - (3 - 4))34:8 × (2 + 4 - 3)35:8 × ((2 + 4) - 3)36:8 × (2 + (4 - 3))37:(8 ÷ 2 + 4) × 338:((8 ÷ 2) + 4) × 339:(8 - 4) × 2 × 340:((8 - 4) × 2) × 341:(8 - 4) × (2 × 3)42:8 × (4 + 2 - 3)43:8 × ((4 + 2) - 3)44:8 × (4 + (2 - 3))45:(8 - 4) × 3 × 246:((8 - 4) × 3) × 247:(8 - 4) × (3 × 2)48:8 × (4 - 3 + 2)49:8 × ((4 - 3) + 2)50:8 × (4 - (3 - 2))