The vertex is in essence the turning point of the parabola y = x² − 10x + 2
the x coordinate of the turning point = [tex]- \frac{b}{2a} [/tex]
= [tex]- \frac{-(10)}{2(1)} [/tex]
= 5
when x = 5, y = (5)² - 10(5) + 2
= -23
Thus coordinate or vertex is ( 5, -23)
