Q22 of 25 Page 8



The index is 10, which is an even natural number.

Hence, Middle term = = T6 = T5+1
                           = 10C5(9y)5
                           = 10C5(9y)5
                           = 10C5(x)5
                           = 10C5(3)-5
                           = 10C5(3)-5
                           = 10C535 x5 y5 = (252)(243)x5 y5
                           = 61236 x5y5

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