Find the fourth-degree polynomial function with zeros 9, − 9, 9i, and − 9i. Write the function in factored form. f(x) =
(Simplify your answer. Type your answer in factored form. Type an expression using x as the variable. Express complex numbers in terms of i. )

Please show work to reach this solution - (x − 9)(x + 9)(x − 9 i )(x + 9 i )

18x

Step-by-step explanation:

d

dx

(9(x−9i)(x+9i))

Use the product rule.

=

d

dx

(9(x−9i)(x+9i))

=9(x−9i)(

d

dx

(x+9i))+(x+9i)(

d

dx

(9(x−9i)))

=9(x−9i)(1+0)+(x+9i)(9)

Simplify.

=18x

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.