Question

Determine the vertex coordinates for:
h(x) = (2x - 5)(2x + 3)

Answer 1

Expand the right side:
y = 4x^2 - 4x - 15.
The x-coordinate of the vertes is -(-4/(2*4)) = 1/2.
f(1/2) = (1 - 5)(1 + 3) = -16.

The vertex is at (1/2, -16).

Answer 2

tahnks