document.write( "Question 626499: x squared - 16 times x - 64 equals 0\r
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Algebra.Com's Answer #394223 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "\"x%5E2-16x%2B64=0\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "Notice that the quadratic \"x%5E2-16x%2B64\" is in the form of \"Ax%5E2%2BBx%2BC\" where \"A=1\", \"B=-16\", and \"C=64\"\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-%28-16%29+%2B-+sqrt%28+%28-16%29%5E2-4%281%29%2864%29+%29%29%2F%282%281%29%29\" Plug in \"A=1\", \"B=-16\", and \"C=64\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2816+%2B-+sqrt%28+%28-16%29%5E2-4%281%29%2864%29+%29%29%2F%282%281%29%29\" Negate \"-16\" to get \"16\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2816+%2B-+sqrt%28+256-4%281%29%2864%29+%29%29%2F%282%281%29%29\" Square \"-16\" to get \"256\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2816+%2B-+sqrt%28+256-256+%29%29%2F%282%281%29%29\" Multiply \"4%281%29%2864%29\" to get \"256\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2816+%2B-+sqrt%28+0+%29%29%2F%282%281%29%29\" Subtract \"256\" from \"256\" to get \"0\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2816+%2B-+sqrt%28+0+%29%29%2F%282%29\" Multiply \"2\" and \"1\" to get \"2\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2816+%2B-+0%29%2F%282%29\" Take the square root of \"0\" to get \"0\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2816+%2B+0%29%2F%282%29\" or \"x+=+%2816+-+0%29%2F%282%29\" Break up the expression. \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%2816%29%2F%282%29\" or \"x+=++%2816%29%2F%282%29\" Combine like terms. \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+8\" or \"x+=+8\" Simplify. \r
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\n" ); document.write( "\n" ); document.write( "So the only solution is \"x+=+8\"\r
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\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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