exam Maths Puzzle Numerical Ability

I have worked this problem several times and I have had someone else look too, and we are not finiding the same answer. I am thinking we hace did soethign wrong. Can you please hel

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exam Other Question

jack is building a rectangular dog pen that he wishes to enclose. the width of the pen is 2 yards less than the length. if the area of the of the dog pen is 15 square yards, how many yards of fencing would he need to completely enclose the pen? Use the associative property to rewrite the following expression: (8x)(-2x)
Thanks,
Pat