document.write( "Question 648295: What is the vertex of the parabola \r
\n" ); document.write( "\n" ); document.write( "f(x)=14x-x^2\r
\n" ); document.write( "\n" ); document.write( "I don't know how to insert the small 2 over the x.
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Algebra.Com's Answer #406631 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" ); document.write( "Hi,
\n" ); document.write( "What is the vertex of the parabola
\n" ); document.write( "\"f%28x%29=14x-x%5E2+\"
\n" ); document.write( "\"f%28x%29=+-x%5E2+%2B+14x+\"
\n" ); document.write( "||completing the square: y = ax^2 + bx + c ⇒ y = a(x - (-b/2a)^2) - a(-b/2a)^2 + c
\n" ); document.write( "f(x) = -(x-7)^2 + 49 V(7,49)
\n" ); document.write( "the vertex form of a Parabola opening up(a>0) or down(a<0), \"y=a%28x-h%29%5E2+%2Bk\"
\n" ); document.write( "where(h,k) is the vertex
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