document.write( "Question 858920: the length of a square is increased by 2. Three times the area of the new square is 75. Find the length of the original square. I got 22 but I'm pretty sure that's wrong \n" ); document.write( "
Algebra.Com's Answer #517455 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Original square is side length x. area is x^2\r
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\n" ); document.write( "\n" ); document.write( "New square, length increased to x+2, and implied is that this is also for a square, the area being \"%28x%2B2%29%5E2=x%5E2%2B4x%2B4\". Described further is that \"3%28x%5E2%2B4x%2B4%29=75\"
\n" ); document.write( "\"x%5E2%2B4x%2B4=75%2F3\"
\n" ); document.write( "\"x%5E2%2B4x%2B4=25\"
\n" ); document.write( "\"highlight_green%28x%5E2%2B4x-21=0%29\".\r
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\n" ); document.write( "\n" ); document.write( "Factoring that equation,
\n" ); document.write( "\"%28x-3%29%28x%2B7%29=0\"
\n" ); document.write( "One answer makes sense and one answer makes no sense. Take the positive solution for x.
\n" ); document.write( "\"highlight%28highlight%28x=3%29%29\". Length of the original square was 3 units.
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