document.write( "Question 1151571: Find the maximum/minimum value and the value of x when it occurs by completing the square.\r
\n" ); document.write( "\n" ); document.write( "a) y=5x^2-40x+81\r
\n" ); document.write( "\n" ); document.write( "b) y=-3x^2-30x-79 \n" ); document.write( "

Algebra.Com's Answer #773381 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "Find the maximum/minimum value and the value of x when it occurs by completing the square.\r
\n" ); document.write( "\n" ); document.write( "a) y=5x^2-40x+81\r
\n" ); document.write( "\n" ); document.write( "b) y=-3x^2-30x-79
\n" ); document.write( "

When you have completed the square on a), you should get the VERTEX form of a quadratic equation: , which you now need to compare to the 
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document.write( "equation: , with (h, k) or in this case, (4, 1) being the vertex. 
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document.write( "And, with the given equation having an \"a\" value that's > 0, this parabola will have a , since k = 1. 
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document.write( "You should now be able to follow this concept and answer b)! \n" );
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