Squaring Technique - Find Square of any number under 10 seconds

Published on Tuesday, January 06, 2015
Simple technique to find square of a two digit or three digit number under 10 seconds.

Here we are going to use simple algebric formula that it 

[a+b]² = a² + 2ab + b²

By applying this formula, let's do some examples :-


Find 43² 
⇒[43]²
⇒[4|3]²
⇒[4² | 2  × 4  × 3 | 3²]
⇒[16 | 24 | 9 ]

Find 114² 
⇒[11| 4]²
⇒ [11² | 2 × 11 × 4 | 4²]
⇒ [121 | 88 | 16]
⇒[121| 88 + 1 | 6]
⇒ [ 121 | 89 | 6 ]
⇒ [129 | 9 | 6 ]
12996

Find 253²
⇒[25|3]²
⇒[25² | 2 × 25 × 3 | 3²]
⇒[625 | 150 | 9]
 64009

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