document.write( "Question 297166: What the fuck is the vertex of x^2-3x-21 \n" ); document.write( "
Algebra.Com's Answer #213990 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
It's on the line of symmetry.
\n" ); document.write( "The line of symmetry is x = -b/2a = 3/2
\n" ); document.write( "Sub 3/2 for x to find y for the vertex:
\n" ); document.write( "y = (3/2)^2 - 3*(3/2) - 21 = -93/4
\n" ); document.write( "--> (3/2,-93/4)
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