exam Maths Puzzle Numerical Ability

8pq^2(2pq-3p+5q)

please help me solve this.

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exam Other Question

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 A garden area is 30ft long and 20ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400ft2, what is the width of the path?