document.write( "Question 154615: I don't understand how to solve this problem. X^2-6x=16. So far I have
\n" ); document.write( "X^2-6x+(6/2)^2=16
\n" ); document.write( "X^2-6x+36/4=16
\n" ); document.write( "I am unclear what to do after that so if you can help me, please.
\n" ); document.write( "

Algebra.Com's Answer #113853 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2-6x=16\" Start with the given equation.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x%5E2-6x-16=0\" Subtract 16 from both sides.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Notice we have a quadratic equation in the form of \"ax%5E2%2Bbx%2Bc\" where \"a=1\", \"b=-6\", and \"c=-16\"\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-%28-6%29+%2B-+sqrt%28+%28-6%29%5E2-4%281%29%28-16%29+%29%29%2F%282%281%29%29\" Plug in \"a=1\", \"b=-6\", and \"c=-16\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%286+%2B-+sqrt%28+%28-6%29%5E2-4%281%29%28-16%29+%29%29%2F%282%281%29%29\" Negate \"-6\" to get \"6\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%286+%2B-+sqrt%28+36-4%281%29%28-16%29+%29%29%2F%282%281%29%29\" Square \"-6\" to get \"36\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%286+%2B-+sqrt%28+36--64+%29%29%2F%282%281%29%29\" Multiply \"4%281%29%28-16%29\" to get \"-64\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%286+%2B-+sqrt%28+36%2B64+%29%29%2F%282%281%29%29\" Rewrite \"sqrt%2836--64%29\" as \"sqrt%2836%2B64%29\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%286+%2B-+sqrt%28+100+%29%29%2F%282%281%29%29\" Add \"36\" to \"64\" to get \"100\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%286+%2B-+sqrt%28+100+%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+=+%286+%2B-+10%29%2F%282%29\" Take the square root of \"100\" to get \"10\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%286+%2B+10%29%2F%282%29\" or \"x+=+%286+-+10%29%2F%282%29\" Break up the expression. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%2816%29%2F%282%29\" or \"x+=++%28-4%29%2F%282%29\" Combine like terms. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+8\" or \"x+=+-2\" Simplify. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the answers are \"x+=+8\" or \"x+=+-2\"
\n" ); document.write( "
\n" );