document.write( "Question 166534: Solve using the quadratic formula.
\n" ); document.write( "5x^2-3x-3=0
\n" ); document.write( "

Algebra.Com's Answer #122737 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"5x%5E2-3x-3=0\" Start with the given equation.\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=5\", \"b=-3\", and \"c=-3\"\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-%28-3%29+%2B-+sqrt%28+%28-3%29%5E2-4%285%29%28-3%29+%29%29%2F%282%285%29%29\" Plug in \"a=5\", \"b=-3\", and \"c=-3\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+%28-3%29%5E2-4%285%29%28-3%29+%29%29%2F%282%285%29%29\" Negate \"-3\" to get \"3\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+9-4%285%29%28-3%29+%29%29%2F%282%285%29%29\" Square \"-3\" to get \"9\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+9--60+%29%29%2F%282%285%29%29\" Multiply \"4%285%29%28-3%29\" to get \"-60\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+9%2B60+%29%29%2F%282%285%29%29\" Rewrite \"sqrt%289--60%29\" as \"sqrt%289%2B60%29\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+69+%29%29%2F%282%285%29%29\" Add \"9\" to \"60\" to get \"69\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%283+%2B-+sqrt%28+69+%29%29%2F%2810%29\" Multiply \"2\" and \"5\" to get \"10\". \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"x+=+%283%2Bsqrt%2869%29%29%2F%2810%29\" or \"x+=+%283-sqrt%2869%29%29%2F%2810%29\" Break up the expression. \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So the answers are \"x+=+%283%2Bsqrt%2869%29%29%2F%2810%29\" or \"x+=+%283-sqrt%2869%29%29%2F%2810%29\" \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "which approximate to \"x=1.131\" or \"x=-0.531\"
\n" ); document.write( "
\n" ); document.write( "
\n" );