Question

What is the vertex of the parabola?
y - 3 = 1/2 (x + 5)²
( __ , __ )

Answer 1

(-5,31/2)

Explanation:

open bracket

y=1/2x^2+5x+28

compare with y=ax2+bx+c

use formula (-b/2a,4ac-b2/4a)