A cool sum in hot summer

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( 498 + 375 ) 2 − ( 498 − 375 ) 2 498 × 375 \frac{ ( 498 + 375)^2 - ( 498 - 375 ) ^2 } { 498 \times 375 }

864 none of these 144 4 2

Sriteja Pradeep by Sriteja Pradeep , 21, India

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1 solution

Sriteja Pradeep
May 24, 2016

(a+b)^2-(a-b)^2/ab=4ab/ab=4

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