document.write( "Question 460081: Hello,\r
\n" ); document.write( "\n" ); document.write( "I have a problem that I am working on but I have two answers. Can someone tell me what I am doing wrong. The problem is:\r
\n" ); document.write( "\n" ); document.write( "solve by x: x^2+14x+4=0\r
\n" ); document.write( "\n" ); document.write( "my first answer is: 7sqrt 5, 7-sqrt 5
\n" ); document.write( "my second answer is: -7-3 sqrt 5, 3 sqrt 7\r
\n" ); document.write( "\n" ); document.write( "I am so lost, please help. Thanks
\n" ); document.write( "

Algebra.Com's Answer #315550 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2%2B14x%2B4=0\" Start with the given equation.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Notice that the quadratic \"x%5E2%2B14x%2B4\" is in the form of \"Ax%5E2%2BBx%2BC\" where \"A=1\", \"B=14\", and \"C=4\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Let's use the quadratic formula to solve for \"x\":\r
\n" ); document.write( "
\n" ); document.write( "
\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
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-%2814%29+%2B-+sqrt%28+%2814%29%5E2-4%281%29%284%29+%29%29%2F%282%281%29%29\" Plug in \"A=1\", \"B=14\", and \"C=4\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-14+%2B-+sqrt%28+196-4%281%29%284%29+%29%29%2F%282%281%29%29\" Square \"14\" to get \"196\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-14+%2B-+sqrt%28+196-16+%29%29%2F%282%281%29%29\" Multiply \"4%281%29%284%29\" to get \"16\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-14+%2B-+sqrt%28+180+%29%29%2F%282%281%29%29\" Subtract \"16\" from \"196\" to get \"180\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-14+%2B-+sqrt%28+180+%29%29%2F%282%29\" Multiply \"2\" and \"1\" to get \"2\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-14+%2B-+6%2Asqrt%285%29%29%2F%282%29\" Simplify the square root (note: If you need help with simplifying square roots, check out this solver) \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-14%29%2F%282%29+%2B-+%286%2Asqrt%285%29%29%2F%282%29\" Break up the fraction. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+-7+%2B-+3%2Asqrt%285%29\" Reduce. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+-7%2B3%2Asqrt%285%29\" or \"x+=+-7-3%2Asqrt%285%29\" Break up the expression. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the solutions are \"x+=+-7%2B3%2Asqrt%285%29\" or \"x+=+-7-3%2Asqrt%285%29\"
\n" ); document.write( "
\n" ); document.write( "
\n" );