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प्रश्न
Find the value of : ( 67.8 )2 - ( 32.2 )2
उत्तर
( 67.8 )2 - ( 32.2 )2
= ( 67.8 + 32.2 )( 67.8 - 32.2 )
= 100 x 35.6
= 3560
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