Question

y=x^2+32x-120
Y=(x^2+32x+256)-120-256
Y=(x+16)^2-376

Why is the vertex (-16,-376) and not (16,-376)

Answer 1

nope, sorry, it's must be Y= (x+16)^2 -376
yours lack ^2 and it's not true

Answer 2

ohh. It asked for the vertex (-16,-376)

Answer 3

how is -16 the x in the vertex

Answer 4

the x-co-ordinate of the vertex of a parabola is \[x = \frac{ -b }{ 2a }\]

Answer 5

The vertex form of a quadratic is:

\[y=(x-h)^{2}+k\]

where the coordinates of the vertex are (h,k).

Loser 66 put your quadratic into vertex form 8 days ago. The minus sign before the h means you have to change the sign to get the proper value of the x-coordinate.