SOLUTION: IF THE SIDES OF A SQUARE ARE LENGTHENED BY 6 CM, THE AREA BECOMES 100 CM^2 FIND THE LENGTH OF THE SIDE OF THE ORIGINAL SQUARE **my answer is 4cm is this correct

Algebra ->  Length-and-distance -> SOLUTION: IF THE SIDES OF A SQUARE ARE LENGTHENED BY 6 CM, THE AREA BECOMES 100 CM^2 FIND THE LENGTH OF THE SIDE OF THE ORIGINAL SQUARE **my answer is 4cm is this correct       Log On


   

Question 344299: IF THE SIDES OF A SQUARE ARE LENGTHENED BY 6 CM, THE AREA BECOMES 100 CM^2 FIND THE LENGTH OF THE SIDE OF THE ORIGINAL SQUARE
**my answer is 4cm is this correct
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Originally let the sides be xcm.
%28x%2B6%29%5E2=100
x%5E2%2B12x%2B36=100
x%5E2%2B12x-64=0
%28x-4%29%28x%2B16%29=0
Two solutions but only the positive solution makes sense here.
x-4=0
highlight%28x=4%29cm
Correct.
Well done!