Squaring Numbers ending in 6

To square any number ending in 6; i.e. 16, 26, 36....96...156..., first square the prior number that is ending in 5 (using the trick “squaring numbers ending in 5"), and then add the number and the prior number to it.

For example: 46² =?

The number to be squared is 46 and its prior number is 45. Finding Square of 45 is simple as it ends in ‘5’ (squaring numbers ending in 5).

So, 46² = 45² + (45 + 46) = 2025 + 91 = 2116

So, 196² =?

196² = 195² + (195 + 196) = 38025 + 391 = 38416