document.write( "Question 485882: x^2-7x+11=0 solve by using quadratic formula \n" ); document.write( "
Algebra.Com's Answer #332231 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "\"x%5E2-7x%2B11=0\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "Notice that the quadratic \"x%5E2-7x%2B11\" is in the form of \"Ax%5E2%2BBx%2BC\" where \"A=1\", \"B=-7\", and \"C=11\"\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-%28-7%29+%2B-+sqrt%28+%28-7%29%5E2-4%281%29%2811%29+%29%29%2F%282%281%29%29\" Plug in \"A=1\", \"B=-7\", and \"C=11\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%287+%2B-+sqrt%28+%28-7%29%5E2-4%281%29%2811%29+%29%29%2F%282%281%29%29\" Negate \"-7\" to get \"7\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%287+%2B-+sqrt%28+49-4%281%29%2811%29+%29%29%2F%282%281%29%29\" Square \"-7\" to get \"49\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%287+%2B-+sqrt%28+49-44+%29%29%2F%282%281%29%29\" Multiply \"4%281%29%2811%29\" to get \"44\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%287+%2B-+sqrt%28+5+%29%29%2F%282%281%29%29\" Subtract \"44\" from \"49\" to get \"5\"\r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%287+%2B-+sqrt%28+5+%29%29%2F%282%29\" Multiply \"2\" and \"1\" to get \"2\". \r
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\n" ); document.write( "\n" ); document.write( "\"x+=+%287%2Bsqrt%285%29%29%2F%282%29\" or \"x+=+%287-sqrt%285%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+=+%287%2Bsqrt%285%29%29%2F%282%29\" or \"x+=+%287-sqrt%285%29%29%2F%282%29\"
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