exam Maths Puzzle Numerical Ability

Simplify this expression.

(x)^6
(y)

Help please

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exam Other Question

This one is not working for me could I see a step by step please.

x^4+x^3-8x^2+x-6 / x^2+1 2a-4=13(a-5)
I cant figure out this problem. It has a fraction on the right hand side but dont know how to write it.