例如 5×2-(-1)×3=13 32 123 405=1×0×6+2×5×(-1) 106 +3×4×0-1×5×0-2×4×6-3×0×(-1) 10-48=-58 6 2021/2/202021/2/20 6 例如 10 48 58 3 4 0 1 5 0 2 4 6 3 0 ( 1) 1 0 6 2 5 ( 1) 1 0 6 4 0 5 1 2 3 5 2 ( 1) 3 13 3 2 5 1 = - - = - + - - - - = + - - = - - = -