Question

y= -3x^2 + 5x - 7 to vertex form.

Answer 1

first coordinate of vertex is
\[-\frac{b}{2a}=-\frac{5}{2\times (-3)}=\frac{5}{6}\]\]

Answer 2

second coordinate is whatever you get when
\[x=\frac{5}{6}\]
i get
\[-\frac{59}{12}\]

Answer 3

so "vertex form" is
\[y=-3(x-\frac{5}{6})^2-\frac{59}{12}\]

Answer 4

thnx