document.write( "Question 1127813: A rectangle is 8 inches and 12 inches long. If the dimensions are increased by the same amount, thereby its area is increased by 69 square inches, by what amount is the side increased? \n" ); document.write( "
Algebra.Com's Answer #744268 by josgarithmetic(39620)\"\" \"About 
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\"8%2A12=a\"\r
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\n" ); document.write( "\n" ); document.write( "\"%288%2Bx%29%2812%2Bx%29=a%2B69\"\r
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\n" ); document.write( "\n" ); document.write( "\"%288%2Bx%29%2812%2Bx%29-a-69=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"%288%2Bx%29%2812%2Bx%29-8%2A12-69=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"8%2A12%2B8x%2B12x%2Bx%5E2-8%2A12-69=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2%2B20x-69=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28x-3%29%28x%2B23%29=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28highlight%28x=3%29%29\"
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