# Algebra I need the formula not the answer

posted by Micah

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

1. Reiny

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

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

2. Ms. Sue

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.

3. Damon

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
then
(S+8)2 = 28561
S + 8 = 169
S = 161

4. Micah

TYPO 169cm^2 My apologies.

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