Question

Find the square of 29 without actual multiplication

Answer 1

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${29}^{2}$

$= {(30 - 1)}^{2}$

$= {30}^{2} - 2 \times 30 \times 1 + {1}^{2}$

$= 900 - 60 + 1$

$= 841$

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Answer 2

29^2
(30-1)^2
30^2+1^2-2(30)(1)
900+1-60
=841