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Answer Posted / vivek
(165)2 - (164)2 = ?
(here 2 is power both the side)
put it in formula of (a)2 - (b)2
where a=165 and b=164
(a+b)*(a-b)
now assign the values.. of a and b
(165 + 164) * (165 - 164)
= 329 * 1
hence 329 * 1= 329.. Answer
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