document.write( "Question 568741: x^2+3x+8=5 \n" ); document.write( "
Algebra.Com's Answer #367092 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "\"x%5E2%2B3x%2B8=5\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2%2B3x%2B8-5=0\" Subtract 5 from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2%2B3x%2B3=0\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "Notice that the quadratic \"x%5E2%2B3x%2B3\" is in the form of \"Ax%5E2%2BBx%2BC\" where \"A=1\", \"B=3\", and \"C=3\"\r
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\n" ); document.write( "\n" ); document.write( "Let's use the quadratic formula to solve for \"x\":\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-B+%2B-+sqrt%28+B%5E2-4AC+%29%29%2F%282A%29\" Start with the quadratic formula\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-%283%29+%2B-+sqrt%28+%283%29%5E2-4%281%29%283%29+%29%29%2F%282%281%29%29\" Plug in \"A=1\", \"B=3\", and \"C=3\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-3+%2B-+sqrt%28+9-4%281%29%283%29+%29%29%2F%282%281%29%29\" Square \"3\" to get \"9\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-3+%2B-+sqrt%28+9-12+%29%29%2F%282%281%29%29\" Multiply \"4%281%29%283%29\" to get \"12\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-3+%2B-+sqrt%28+-3+%29%29%2F%282%281%29%29\" Subtract \"12\" from \"9\" to get \"-3\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-3+%2B-+sqrt%28+-3+%29%29%2F%282%29\" Multiply \"2\" and \"1\" to get \"2\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-3+%2B-+i%2Asqrt%283%29%29%2F%282%29\" Simplify the square root (note: If you need help with simplifying square roots, check out this solver) \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%28-3%2Bi%2Asqrt%283%29%29%2F%282%29\" or \"x+=+%28-3-i%2Asqrt%283%29%29%2F%282%29\" Break up the expression. \r
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\n" ); document.write( "\n" ); document.write( "So the solutions are \"x+=+%28-3%2Bi%2Asqrt%283%29%29%2F%282%29\" or \"x+=+%28-3-i%2Asqrt%283%29%29%2F%282%29\" \r
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\n" ); document.write( "\n" ); document.write( "If you need more help, email me at jim_thompson5910@hotmail.com\r
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\n" ); document.write( "\n" ); document.write( "Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you\r
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\n" ); document.write( "\n" ); document.write( "Jim
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