Question

find the square of 39 by any suitable method​

Answer 1

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Answer 2

$\huge\mathfrak{hello \: mate!} \\ \\ </p><p></p><p>{your \: answer:}$

SQUARE ROOT OF (39)

${(39)}^{2} we \: can \: also \: write \: \\ \\ {(40 - 1)}^{2} \\ \\ by \: using \: {(a - b)}^{2} we \: can \: find \: \\ \\ {(40)}^{2} - 2(40)(1) + {(1)}^{2} \\ \\ 1520 + 1 \\ \\ = > 1521$

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