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29-09-2018
Mathematics

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Please help 25 points the problem is below

Please help 25 points the problem is below class=

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29-09-2018

The formula of an area of a rectangle:

[tex]A=wl[/tex]

We have l = 2w + 40

Substitute:

[tex]A=w(2w+40)=2w^2+40w[/tex]

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