document.write( "Question 150767: A sponsor for the school yearbook has asked that the length and width of a photo in their ad be increased by the same amount in order to double the area of the photo. If the photo was originally 12cm by 8cm, what should the new dimensions of the enlarged photo be? \n" ); document.write( "
Algebra.Com's Answer #110690 by stanbon(75887)\"\" \"About 
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A sponsor for the school yearbook has asked that the length and width of a photo in their ad be increased by the same amount in order to double the area of the photo.
\n" ); document.write( "If the photo was originally 12cm by 8cm, what should the new dimensions of the enlarged photo be?
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\n" ); document.write( "Original Area = 12*8 = 96 sq. cm
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\n" ); document.write( "New Area = (12+x)(8+x) = 2*96
\n" ); document.write( "96 + 20x + x^2 = 192
\n" ); document.write( "x^2 + 20x - 96 = 0
\n" ); document.write( "(x-4)(x+24) = 0
\n" ); document.write( "Positive solution:
\n" ); document.write( "x = 4 cm
\n" ); document.write( "New Dimensions: 12+4 = 16 cm ; 8+4 = 12 cm
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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