exam Maths Puzzle Numerical Ability

I wonder if you would be so kind to help me with this problem?
{{(3a+6/2a+2}*(a^2-a-2/a^2-4)}}
Thank you in advance!!

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exam Other Question

Identify the polynomials of degree one.

a. x^3+4x+8
b. 76+5x
c. (x)^1/2+5x-6
d. 500+(45)^1/2x
e. 289y+6-76y
f. (37)^1x^1
g. (9x^2)^1/2+3
h. 89x^4+3y+5
A lottery pays the winner $1 on the first day, $2 on the next day, and so on, doubling the payment on each successive day.

a. What is the payment on the fifteenth day?
b. Find