exam Maths Puzzle Numerical Ability

how do you evaluate the following expression:
log base square root 2 (2 sqaure root 2)

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exam Other Question

2(b+4)+8b= my work is this correct 2 x b+2 x 4+8b
=2b+8+8b
=18b Hi!
So the solution is to solve
2
- (36x-6)=68
3
I tried solving this by doing the 5-step method, the problem is just to difficult for me to answer, please help me Thank You