Find the vertex of the graph of the equation y=-2x^2+8x-15+3x^2-6x+22.
y= -2x^2+8x-15+3x^2-6x+22 rearrange as
y = x^2 + 2x + 7
The x coordinate of the vertex = -2 / [ 2 * (1) ] = -1
The y coordinate is (-1)^2 + 2(-1) + 7 = 6
