exam Maths Puzzle Numerical Ability

Can you please help with this one?
(16 - x2)/
(x3 - 2x2 - 8x)
So far I have:
(4-x)(4+x) over
x(x+2)(x-4)
Do this look right and is it as far as I can go?

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exam Other Question

Given P(x)=2x^2+13x+11 and Q(x)=2x^2+10x+8 Find P(x)+Q(x) 2 students have 210 $altogether. If the first one gives 1/6 of his sum of money to the second one ,the second one will have 1/2 of the sum the remains to the firdt one . What some