exam Maths Puzzle Numerical Ability

Help me SIMPLIFY this -please:

2/3 * x/6 * 3/2x

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exam Other Question

Find the axis of symmetry.
y=x^2+5x�7
I am coming up with 0 (zero)as my answer and that is not one of the
answers on the test. Can you assist me? Please show me the work so I can
see where I am going wrong.
Thanks I'm not really sure how to write this problem out. It is a complex rational expression that I need to try and solve. It reads:
x+1/x-1 + 1
___________

x+1/x-1 - 1 and the w