document.write( "Question 394279: solve the equation, check the results graphically
\n" ); document.write( "3x2 + 9x + 1 = 0
\n" ); document.write( "

Algebra.Com's Answer #279757 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Hi
\n" ); document.write( "3x2 + 9x + 1 = 0
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "\"x+=+%28-9+%2B-+sqrt%28+69%29%29%2F%286%29+\"
\n" ); document.write( "x is {-0.1156, -2.8844}
\n" ); document.write( "finding vertex by completing square
\n" ); document.write( "the vertex form of a parabola, \"y=a%28x-h%29%5E2+%2Bk\" where(h,k) is the vertex
\n" ); document.write( "y = 3(x^2 + 3) + 1
\n" ); document.write( "y = 3[(x+3/2)^2 - 9/4] + 1
\n" ); document.write( "y = 3(x + 3/2)^2 -23/4 Vertex is Pt(-3/2,-23/4)\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( " \n" ); document.write( "
\n" );