When can I use this method?
For squaring any 2-digit or 3-digit numbers.
One can also use this method to solve higher digit numbers as long as squaring of its component numbers is easy enough.
[tubepress mode=”playlist” playlistValue=”PLngU_U4dGjQdWnsahdkVSPIel_pHfEpQK”]
- This method uses the concept of a2 = [(a + b) (a – b)] + b2 = [a2 – b2] + b2
- Use the shortcut 2D or any other 2-digit squaring shortcut to square 2-digit components when squaring 3-digit numbers.
Related Shortcuts –