document.write( "Question 637522: what is the maxium y value for f(x)=x^2+6x+8 \n" ); document.write( "
Algebra.Com's Answer #402679 by aquyu214(10)\"\" \"About 
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f(x)=x^2+2*3*x+3^2-3^2+8
\n" ); document.write( "=x^2+2*3*x+3^2-1
\n" ); document.write( "=(X+3)^2-1\r
\n" ); document.write( "\n" ); document.write( "when X=-3 get the minimum value -1
\n" ); document.write( "X changed then Y can be infinite, there is no maximum y value
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