exam Maths Puzzle Numerical Ability

Identify the axis of symmetry, create a suitable table of values and then sketch the graph,(including the axis of symmetry.)
y=x^2-4x

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Please help me with this question:
I am supposed to condense the logaithmic expresssion then write as a single log with a coeffecient as 1 and evaluate if possible.

^1/6(^log2x Can someone please provide me with an example of a composite function step by step solution