Question

answer is 139000
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Answer 1

hey ●●●●●
you answer is here friend♡♡♡

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using identity: ( in attachment)

(389-111)(389+111)
278×500
139000

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Answer 2

${389}^{2} - {111}^{2}$

$value = \\ 389 \times 389 = 151321 \\ 111 \times 111 = 12321$

$151321 \: - 12321 = 139000$