Question
Find the squares of the following numbers using column method. Verify the result by finding the square using the usual multiplication, $25$
✓
Answer
$(25)^2$
Here, $a = 2, b = 5$
$(25)^2= 25 \times 25 = 625$
$(25)^2= 625$
Here, $a = 2, b = 5$
| $\text{a}^2$ | $2\text{ab}$ | $\text{b}^2$ |
| $\ \ (2)^2\\=4\\+{2}\\ \ \ \ \ \overline{6}$ | $2\times2\times5\\=20\\+\ \ 2\\ \ \ \ \ \overline{22}$ | $\ \ \ (5)^2\\=25$ |
$(25)^2= 625$
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