The concept of **DUPLEX** has to be learned before you learn **SQUARING ANY NUMBER USING DUPLEX METHOD**.

**When can I use this method?**

For squaring any number.

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**Notes –**

- Notice the patterns in which the digits are selected.
- Notice the way the individual values are added.
- This method uses the concept of (a + b +c +…)
^{2}= a^{2}+ b^{2}+ c^{2}+ … 2ab + 2bc + 2ac + … (It is a simplified version of the Multinomial Theorem)

**Related Shortcuts –**

Squaring Any Number using Duplex Method

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