Question

HELP!!

Answer 1

1. True or False: The value 4 is an upper bound for the zeros of the function shown below.
f(x)=4x^3-12x^2-x+15

2. True or False: The value -1 is a lower bound for the zeros of the function shown below.
f(x)=x^4+x^3-11x^2-9x+18

3. Express the polynomial as a product of linear factors.
f(x)=x^3-5x^2-18x+72
a. (x - 2)(x + 6)(x - 6)
b. (x - 4)(x + 3)(x + 2)
c. (x - 3)(x + 3)(x - 8)
d. (x - 3)(x + 4)(x - 6)

Answer 2

Well, yes, number one is "true"--but do they care about HOW you solve the question? What subject are you studying?

Answer 3

No, my teacher don't want me to show work on these questions and we are studying 'Solving Polynomial Equations'