anonymous
  • anonymous
If the side length of a square can be represented by 2x + 10 and its area is 256 square units, find the value of x.
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
(2x+10)^2=256 4x^2 + 40x + 100 = 256 can you solve from there?
anonymous
  • anonymous
I got this far but I am having problems what to do from here....having a mental block because I know it is something simple I am missing.
anonymous
  • anonymous
i hate this problem... um subtract 256 from both sides next but I don't know what after that. ^^;

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anonymous
  • anonymous
me too. you have to subtract 100 from both sides but then I can't remember how to get 4x^ +40x=156 ( I think) ....solving for x
anonymous
  • anonymous
I got this far but I am having problems what to do from here....having a mental block because I know it is something simple I am missing.

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