SOLUTION: The length and width of an 8cm X 12cm photograph are increased by the same amount in order to double its area. What are the new dimensions?

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Question 1051152: The length and width of an 8cm X 12cm photograph are increased by the same amount in order to double its area. What are the new dimensions?
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Let = the original area



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Complete the square





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The new dimensions are 12 x 16
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check:

and


OK

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