SOLUTION: An artist wants to frame a square painting with an area of 400 square inches. She wants to know the legnth of the wood trim that is needed to go around the painting. If x is the l

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Question 896193: An artist wants to frame a square painting with an area of 400 square inches. She wants to know the legnth of the wood trim that is needed to go around the painting. If x is the legnth of one side of the painting, what equation can you set up to find the legnth of a side? How many solutions does the equation have?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+x%5E2+=+400+ os the equation
+x+=+20+
and
+x+=+-20+
are the 2 solutions
Only the positive solution is valid