Find the value of :( 67.8 )^2 - ( 32.2 )^2 - Vidyadip

Question

Find the value of $:( 67.8 )^2 - ( 32.2 )^2$

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Answer

$( 67.8 )^2 - ( 32.2 )^2$
$= ( 67.8 + 32.2 )( 67.8 - 32.2 )$
$= 100\times 35.6$
$= 3560$

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