document.write( "Question 669143: u^2+2u-2=0 \n" ); document.write( "

Algebra.Com's Answer #416116 by jim_thompson5910(35256) $\"\"$ $\"About$

You can put this solution on YOUR website!
Use the quadratic formula to solve for 'u'\r
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\n" ); document.write( "\n" ); document.write( " $\"u+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"u+=+%28-%282%29%2B-sqrt%28%282%29%5E2-4%281%29%28-2%29%29%29%2F%282%281%29%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"u+=+%28-2%2B-sqrt%284-%28-8%29%29%29%2F%282%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"u+=+%28-2%2B-sqrt%284%2B8%29%29%2F%282%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"u+=+%28-2%2B-sqrt%2812%29%29%2F2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"u+=+%28-2%2Bsqrt%2812%29%29%2F2\"$ or $\"u+=+%28-2-sqrt%2812%29%29%2F2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"u+=+%28-2%2B2%2Asqrt%283%29%29%2F2\"$ or $\"u+=+%28-2-2%2Asqrt%283%29%29%2F2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"u+=+-1%2Bsqrt%283%29\"$ or $\"u+=+-1-sqrt%283%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "So the exact solutions are $\"u+=+-1%2Bsqrt%283%29\"$ or $\"u+=+-1-sqrt%283%29\"$ \n" ); document.write( "

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