document.write( "Question 390510: 3x^2-7x-20 in vertex form \n" ); document.write( "

Algebra.Com's Answer #276917 by robertb(5830) $\"\"$ $\"About$

You can put this solution on YOUR website!
The vertex form is, $\"y+=+a%28x-h%29%5E2+%2B+k\"$ where (h,k) is the vertex.
\n" ); document.write( " $\"h+=+-b%2F2a+=+7%2F6\"$ ,
\n" ); document.write( " $\"k+=+%284ac+-+b%5E2%29%2F4a+=+%284%2A3%2A-20+-+49%29%2F12+=+-289%2F12\"$ .
\n" ); document.write( "Therefore the vertex form is
\n" ); document.write( " $\"y+=+3%28x-7%2F6%29%5E2+-+289%2F12\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );