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Mathematics 24 Online
OpenStudy (anonymous):

The area od a rectangular athletic field is represented by the expression 81y^2-16z^2 square meters. Write an algebraic expression to represent one possible set of dimensions ( in the sense of lenght times width) of the athletic field. Include correct units with your solution.

OpenStudy (amistre64):

81 and 16 are squares so difference of squares

OpenStudy (anonymous):

(9y + 4z)(9y - 4z)

OpenStudy (amistre64):

(9y-4z) (9y+4z)

OpenStudy (amistre64):

meters lol

OpenStudy (anonymous):

so one factor is the length and one the breadth

OpenStudy (anonymous):

ok so which is it. is it (9y + 4z)(9y - 4z) or (9y-4z) (9y+4z)

OpenStudy (amistre64):

both...pick one and stick to it

OpenStudy (amistre64):

which would you rather have? 20 dollars and 32 more? or 32 dollars and 20 more?

OpenStudy (anonymous):

ok.

OpenStudy (anonymous):

so length is 9y-4z and width is 9y+4z for my answer.

OpenStudy (anonymous):

yeah

OpenStudy (amistre64):

that looks good ;)

OpenStudy (amistre64):

meters....include meters

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