document.write( "Question 913316: The perimeter of a rectangle is 32m. The length of the diagonal is 8 m more than its width. Find the dimensions of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #554429 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi,
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\n" ); document.write( "L + w = 16
\n" ); document.write( "L = 16-w
\n" ); document.write( "Pythagorean Theorem
\n" ); document.write( "(16-w)^2 + w^2 = (w+8)^2
\n" ); document.write( "256 - 32w + w^2 + w^2 = w^2 + 16w + 64
\n" ); document.write( "w^2 -48w +192 = 0
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Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation \"ax%5E2%2Bbx%2Bc=0\" (in our case \"1x%5E2%2B-48x%2B192+=+0\") has the following solutons:
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\n" ); document.write( " \"x%5B12%5D+=+%28b%2B-sqrt%28+b%5E2-4ac+%29%29%2F2%5Ca\"
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\n" ); document.write( " For these solutions to exist, the discriminant \"b%5E2-4ac\" should not be a negative number.
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\n" ); document.write( " First, we need to compute the discriminant \"b%5E2-4ac\": \"b%5E2-4ac=%28-48%29%5E2-4%2A1%2A192=1536\".
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\n" ); document.write( " Discriminant d=1536 is greater than zero. That means that there are two solutions: \"+x%5B12%5D+=+%28--48%2B-sqrt%28+1536+%29%29%2F2%5Ca\".
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\n" ); document.write( " \"x%5B1%5D+=+%28-%28-48%29%2Bsqrt%28+1536+%29%29%2F2%5C1+=+43.5959179422654\"
\n" ); document.write( " \"x%5B2%5D+=+%28-%28-48%29-sqrt%28+1536+%29%29%2F2%5C1+=+4.40408205773458\"
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\n" ); document.write( " Quadratic expression \"1x%5E2%2B-48x%2B192\" can be factored:
\n" ); document.write( " \"1x%5E2%2B-48x%2B192+=+1%28x-43.5959179422654%29%2A%28x-4.40408205773458%29\"
\n" ); document.write( " Again, the answer is: 43.5959179422654, 4.40408205773458.\n" ); document.write( "Here's your graph:
\n" ); document.write( "\"graph%28+500%2C+500%2C+-10%2C+10%2C+-20%2C+20%2C+1%2Ax%5E2%2B-48%2Ax%2B192+%29\"
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