What is the vertex form of y=x25x19?

1 Answer
Apr 4, 2018

y=(x+52)2514

Explanation:

y=x25x19

Factor out a -1.

y=(x2+5x+19)

Add and subtract (52)2 within the grouping.

y=(x2+5x+254+19254)

Factor the first 3 terms of the right hand side.

y=[(x+52)2+19254]

Simplify.

y=[(x+52)2+514]

y=(x+52)2514

graph{-x^2-5x-19 [-5, 1, -20, -10]}