document.write( "Question 683900: Solve for x: 5(x – 2^)2 = 3 \n" ); document.write( "
Algebra.Com's Answer #423790 by jerryguo41(197)\"\" \"About 
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5(x–2)^2=3
\n" ); document.write( "Expand
\n" ); document.write( "\"5%28x%5E2-4x%2B4%29=3\"
\n" ); document.write( "Distribute
\n" ); document.write( "\"5x%5E2-20x%2B20=3\"
\n" ); document.write( "Subtract
\n" ); document.write( "\"5x%5E2-20x%2B17=0\"
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Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation \"ax%5E2%2Bbx%2Bc=0\" (in our case \"5x%5E2%2B-20x%2B17+=+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=%28-20%29%5E2-4%2A5%2A17=60\".
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\n" ); document.write( " Discriminant d=60 is greater than zero. That means that there are two solutions: \"+x%5B12%5D+=+%28--20%2B-sqrt%28+60+%29%29%2F2%5Ca\".
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\n" ); document.write( " \"x%5B1%5D+=+%28-%28-20%29%2Bsqrt%28+60+%29%29%2F2%5C5+=+2.77459666924148\"
\n" ); document.write( " \"x%5B2%5D+=+%28-%28-20%29-sqrt%28+60+%29%29%2F2%5C5+=+1.22540333075852\"
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\n" ); document.write( " Quadratic expression \"5x%5E2%2B-20x%2B17\" can be factored:
\n" ); document.write( " \"5x%5E2%2B-20x%2B17+=+5%28x-2.77459666924148%29%2A%28x-1.22540333075852%29\"
\n" ); document.write( " Again, the answer is: 2.77459666924148, 1.22540333075852.\n" ); document.write( "Here's your graph:
\n" ); document.write( "\"graph%28+500%2C+500%2C+-10%2C+10%2C+-20%2C+20%2C+5%2Ax%5E2%2B-20%2Ax%2B17+%29\"

\n" ); document.write( "\n" ); document.write( "Simplify
\n" ); document.write( "\"%2820%2B-sqrt%2860%29%29%2F10\"
\n" ); document.write( "==>
\n" ); document.write( "\"%2810%2B-sqrt%2815%29%29%2F5\"
\n" ); document.write( "Thus
\n" ); document.write( "x= \"%2810%2B-sqrt%2815%29%29%2F5\" or \"2.77\",\"1.22\"
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