Rewrite in simplest radical form: 1/-3 over x^6 show each step of your process.

A) (3, 0) and (-1.25, 0)

B) minimum

(0.875, -18.063)

C) see picture attached

Step-by-step explanation:

f(x) = 4x² − 7x − 15

A) Using quadratic formula:

B) The x-coordinate of the vertex is located at:

x = -b/(2a)

x = 7/(2*4) = 0.875

To find the y-coordinate of the vertex, just replace the x value previously found into f(x), as follows:

f(x) = 4(0.875)² − 7(0.875) − 15 = -18.063

The vertex is going to be a minimum becauseI a (the leading coefficient) is positive, which means that the curve opens upward.

C) Locate the three previous points on the plane. Draw a U-shape curve that passes through them.