document.write( "Question 139130This question is from textbook martin gaye :beginning & intermidiate algebra, 3e
\n" ); document.write( ": Do these equations have a maximum or a minimum? What is the maximum or minimum point? g(x) = -x^2 + 4x + 5 and f(x) = 2(x+3)^2 - 4....i can't really show what i have tried because i don't know how to figure this out, sorry!! please help?! \n" ); document.write( "
Algebra.Com's Answer #101470 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Do these equations have a maximum or a minimum? What is the maximum or minimum point?
\n" ); document.write( "g(x) = -x^2 + 4x + 5
\n" ); document.write( "Vertex at x = -b/2a = -4/(2*-1) = 4
\n" ); document.write( "g(4) = 5
\n" ); document.write( "Vertex: (4.5)
\n" ); document.write( "This is a maximum because the coefficient of x^2 is negative.
\n" ); document.write( "------------------------\r
\n" ); document.write( "\n" ); document.write( "and f(x) = 2(x+3)^2 - 4....
\n" ); document.write( "f(x)+4 = 2(x+3)^2
\n" ); document.write( "This is the form y-k = a(x-h)^2
\n" ); document.write( "h=-3 ; k=-4
\n" ); document.write( "Vertex: (-3,-4)
\n" ); document.write( "This is a minimum point because the coefficient of x^2 is positive.
\n" ); document.write( "==========================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "
\n" );