The value of ( 249 - 248 )( 249 + 248 ) is
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Step-by-step explanation:
(249-248)(249+248)
=1×497
=497
(a-b)(a+b)=a^2-b^2
(249-248)(249+248)
=(249)^2-(248)^2
=62001-61504
=497
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