exam Maths Puzzle Numerical Ability

Ok, last one I swear. If someone can just show me how to wrk this problem, I should be able to finish solving the rest of the problems I have to do this week. I just do not get thi

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exam Other Question

I have one question its a word problem

John Roberts has $42,180.53 in a brokerage account and he plans to contribute an additional $5,000 to the account at the end of the year. 8pq^2(2pq-3p+5q)

please help me solve this.