3D Studio Max
Adjust on X with scale non-uniform.
Insert a vertex into the edge as shown with the 3d Snap on set to Midpoint, hide the 2 edges and make visible the 2 others.
Select the faces as in the picture and then follow a series of Extrude/Bevel to create the edge and another for the hollow.
Then move the vertexes downwards.
Lastly, make visible the 2 edges like opposite.
Start again for the second hole.
Finally remove the horizontal edges. That gives a better smoothing with Meshsmooth in this case.
Extrude the faces to build the blade.
select the vertexes in red and made a scale non-uniform on the axis Y.
Then extrude the remainder of the blade and use scales non-uniforms for the point.