Question

[398 +257)^2-(398 - 257)^2] ÷
[398 x 257]

please tell the explanation ​

Answer 1

Answer:

$[398 + 257]^{2} - [398 - 257]^{2} / [398*257]$

$[646]^{2} - [132]^2 / [102286]$

$[417316] - [17424] / [102286]$

$[399892] / [102286]$

$[417315.86]$

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