Find the squares of the following numbers using column method. Ve… - Vidyadip

Question

Find the squares of the following numbers using column method. Verify the result by finding the square using the usual multiplication, $71$

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Answer

$(71)^2$
Here, $a = 7, b = 1$

$\text{a}^2$	$2\text{ab}$	$\text{b}^2$
$\ \ \ (7)^2\\=49\\+\ \ {1}$	$2\times7\times1\\=14$	$\ \ \ (1)^2\\=\ 1$
$50$

$(71)^2= 71 \times 71 = 5041$
$\therefore (71)^2= 5041$

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