Q. 4 D4.6( 9 Votes )

Expand each of th

Answer :

= [ + + 1]2


Using (x + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2zx


Here x = , y = and z = 1


= + + 12 + 2 + 2(1) + 2(1)


= + + 1 + + (-b) +


= + + 1 - – b +


Therefore = + + 1 - – b +


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