1.

(-2*2^n %2B 2^(n %2B 4))/((2*2^(n %2B 3)))

Answer»

ans

2^n+4 - 2(2^n)/ 2(2^n+3)

= 2^n*2^4 - 2(2^n)/ 2(2^n*2^3)

= 2^n(2^4 - 2) 2^n(2^4)

= (16 - 2)/16

= 14/16

= 7/8


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