Algebra I need the formula not the answer

If the sides of a square are lengthened by 8cm the area becomes 169^2. Find the length of a side of the original square.

I am getting 34.25cm

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  1. If you typed the question correctly, then the answer is obvious

    (x+8)^2 = 169^2
    then x+8 = 169
    and x=161

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  2. The square root of 169 is 13, which is the lengthened measure of each side. Subtract 8 from 13 to find the original length of each side.

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    Ms. Sue
  3. You must have a typo. I think you mean the area is 169 cm^2
    (S+8)^2 = 169

    for which I get 5 cm

    However if it really is as you wrote it
    (S+8)2 = 28561
    S + 8 = 169
    S = 161

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  4. TYPO 169cm^2 My apologies.

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