Question 276483
y=8+2x-x^2
{{{ graph( 300, 200, -6, 5, -10, 10, -x^2 +2X +8) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -x^2 +2X +8). 
MAXIMUM VALUE OF Y=8.