The area of a rectangular athletic field is represented by the expression 9z^7-42z^4+72z^2 square meters. Write an algebraic expression to represent one possible set of dimensions (in he sense of length times width) of the athletic field. Include correct units with your solution.
m afraid i dont understand wt u mean by representing one set of dimensions
first off factor out the excess baggage
as in the length and the width of the rectangular field.
z^2(9z^5 -42z^2 +72)...you sure there aint a typo in this?
3z^2 (3z^5 -14z^2 +24)
no there is no typo. why do you ask
that z^7 is an odd thing to work with...thought maybe it was spoosed to be z^6
no it is z^7
with this factored version you have 2 'numbers' to represent a length and width; just pick a z>0...maybe a 1?
3(3-14+24) 3(13) seems fetching ;)
what
the length is (3z^2) ft the width is (3z^5 -14z^2 +24) ft
whatever number you choose for 'z' will give you a product of lenth times width whichis equal to area
ok.
in the problem it is meters, so the answer would be L= 3z^2 meters and W= 3z^5-14z^2+24 meters.
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