SOLUTION: Factor Word Problem If the sides of a square are lengthened by 4 cm, the area becomes 256 squared cm. find the length of a side of the original square. My problem right now

Question 835500: Factor Word Problem
If the sides of a square are lengthened by 4 cm, the area becomes 256 squared cm.
find the length of a side of the original square.
My problem right now is putting it into numbers. i think after i know how to write it i can solve it
Answer by josgarithmetic(39669) (Show Source): You can put this solution on YOUR website!
Original length you do not know, a variable x.
x+4 is the lengthened side, giving you stated new area 256 cm^2:
;
and you want to know, or find, x.
Can you continue this?

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Also, be aware,
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