document.write( "Question 389550: \" What is the number if a number is added to its reciprocal the sum is 25/12?\" \n" ); document.write( "
Algebra.Com's Answer #276084 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
x + (1/x) = 25/12
\n" ); document.write( "\"x%5E2+%2B+1+=+25x%2F12\"
\n" ); document.write( "\"12x%5E2+-+25x+%2B+12+=+0\"
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Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)
Quadratic equation \"ax%5E2%2Bbx%2Bc=0\" (in our case \"12x%5E2%2B-25x%2B12+=+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=%28-25%29%5E2-4%2A12%2A12=49\".
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\n" ); document.write( " Discriminant d=49 is greater than zero. That means that there are two solutions: \"+x%5B12%5D+=+%28--25%2B-sqrt%28+49+%29%29%2F2%5Ca\".
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\n" ); document.write( " \"x%5B1%5D+=+%28-%28-25%29%2Bsqrt%28+49+%29%29%2F2%5C12+=+1.33333333333333\"
\n" ); document.write( " \"x%5B2%5D+=+%28-%28-25%29-sqrt%28+49+%29%29%2F2%5C12+=+0.75\"
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\n" ); document.write( " Quadratic expression \"12x%5E2%2B-25x%2B12\" can be factored:
\n" ); document.write( " \"12x%5E2%2B-25x%2B12+=+%28x-1.33333333333333%29%2A%28x-0.75%29\"
\n" ); document.write( " Again, the answer is: 1.33333333333333, 0.75.\n" ); document.write( "Here's your graph:
\n" ); document.write( "\"graph%28+500%2C+500%2C+-10%2C+10%2C+-20%2C+20%2C+12%2Ax%5E2%2B-25%2Ax%2B12+%29\"

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\n" ); document.write( "x = 3/4
\n" ); document.write( "x = 4/3
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