SOLUTION: If the sides of a square are legnthened by 7 in.,the area becomes 121 in.^2. Find the legnth of a side of the original square. THANK YOU SO MUCH!

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Question 63907This question is from textbook Algebra 1
: If the sides of a square are legnthened by 7 in.,the area becomes 121 in.^2. Find the legnth of a side of the original square.
THANK YOU SO MUCH! This question is from textbook Algebra 1

Answer by tanimachatterjee(60) About Me  (Show Source):
You can put this solution on YOUR website!
let the length of a side of the original sq. be 'a in.'
now it's 'a+7 in '

area becomes (a+7)^2 in^2
or (a+7)^2 = 121

or a+7 = 11 [neglecting the -ve solun]

or a = 11-7 =4

ans is 4 in