Part of the graph of the function f(x) = (x + 4)(x - 6) is shown
below.
which statements about the function are true? select two
options.
the vertex of the function is at (1,-25).
the vertex of the function is at (1.-24).
the graph is increasing only on the interval -4< x < 6.
the graph is positive only on one interval, where x < -4.
the graph is negative on the entire interval
4 3
6+

answer:

the answer to part of the graph of the function f(x) = (x + 4)(x - 6) is shown

below.

which statements about the function are true? select two

options.

the vertex of the function is at (1,-25).

the vertex of the function is at (1.-24).

the graph is increasing only on the interval -4< x < 6.

the graph is positive only on one interval, where x < -4.

the graph is negative on the entire interval

4 3

6+

its easy 38

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.