—1的2次方×(—3)的2次方—(—1/2)的2003次方×(—2)的2002次方除以2/9
=-1×9-(-1/2)*(-1/2)²ºº²*(-2)²ºº²×9/2
=-9-(-1/2)*[-1/2*(-2)]²ºº²×9/2
=-9+1/2×9/2
=-9+9/4
=-36/9+9/4
=-27/4
—1的2次方×(—3)的2次方—(—1/2)的2003次方×(—2)的2002次方除以2/9
=-1×9-(-1/2)*(-1/2)²ºº²*(-2)²ºº²×9/2
=-9-(-1/2)*[-1/2*(-2)]²ºº²×9/2
=-9+1/2×9/2
=-9+9/4
=-36/9+9/4
=-27/4