book Maths Puzzle Numerical Ability

Could you please assist me with this problem:

(16x^2 + 8)(x-2)/(x-2)

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book Other Question

a^2-ab+9a-9b Divided by a+9

All I would like to know is how to do this problem. Thanks. This question is actually about elimination because there werent any catorgories for elimination. My question is:
5x-4y=1
7x+4y=11

Thanks for the help!