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A poster consists of a photograph bordered by a 5cm margin. The area of the poster is to be 400cm^2. (a) Show that the area of the photograph is given by the equation A=500-10x-4000/x (b) Find the maximum area possible for the photograph. (There's also a diagram that i will draw)

Mathematics
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so what is x again?
What do you mean ? x again ?

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Other answers:

plz make a clearer diagram !!!!!
gr8 , okay xD
me me me me me me x3 times boosted !!! virus
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is it good now ? Damn , i cant draw on this stupid mouse pad xD
lana u gon from facebook !!!! :(
answer my question pls xD
c
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Is it a rectangular poster or square?
rectangular
wtf the pic is not loading!!!!!!!11
Okay. 400cm^2 = (l + 10) * (b + 10) now actually the area of the picture is lb but with the additional borders on each end it becomes as above. 400 = lb + 10b + 10l + 100 lb = 300 - 10b -10l And I think I am stuck O.o
awww :(
Never mind Hashir I will work it out myself (:
uploading in 2 min
Okay ty
here it is
1 Attachment
uploaded !!!!
i hope u can differentiate that mimi nad then put equal to zero and find x !!
tyvm hashir (:
np you are welcome !!!!!
yup i can differentiate xD
ok i gtg !!! bye
good harhir
ok byee~
thnkoo!!!!

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