What is the vertex of y=x2+40x16?

1 Answer
Aug 1, 2018

The vertex is at (20,384).

Explanation:

Given: y=x2+40x16

This equation is in standard quadratic form (y=ax2+bx+c), meaning we can find the x-value of the vertex using the formula b2a.

We know that a=1, b=4, and c=16, so let's plug them into the formula:
x=402(1)=20

Therefore, the x-coordinate is 20.

To find the y-coordinate of the vertex, plug in the x-coordinate and find y:
y=x2+40x16

y=(20)2+40(20)16

y=400+80016

y=384

Therefore, the vertex is at (20,384).

Hope this helps!