exam Maths Puzzle Numerical Ability

I need to put in simplest form - don't know how to write this so i will use words - PLEASE HELP!!!!

1. square root of 8 over square root of 8 (with a 4 in the nth position)

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exam Other Question
Find the slope of the line through the points.
30). (-5, -4) and (3, -4) Find the sum of each geometric series described
1. asub1= 512 r=1/2 n=6
2. 3 + 6 + 12...+192
3. asub1= -2 asub5= -162 n=7