x+y=4, x - y = 2 হলে, xy এর মান কত?

xy = (x+y)2/2 - (x-y)2/2

       = (4)2/2 - (2)2/2

        = 16/4 - 4/4

       = 12/4

       = 3 Ans. 

Created: 4 weeks ago | Updated: 1 week ago

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