Posted by Terry on .
If the sides of a square are lengthened by 6 cm the area becomes 196 cm 2 find the length of a side of the original square?

algebra 
MathGuru,
Area of a square = s^2 (side squared)
x = side of original square
x + 6 = side of lengthened square
196 = (x + 6)^2
Solve for x.