document.write( "Question 683186: what is the vertex form of y=3x^2-24x +21 \n" ); document.write( "
Algebra.Com's Answer #423699 by Onmyoji.S(32)\"\" \"About 
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y=3x²-24x+21
\n" ); document.write( "vertex form:-b/2a
\n" ); document.write( " = -(-24)/2*3
\n" ); document.write( " =4
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