Find the zeros of polynomial functions and solve polynomials equations.

f (x) = 5x^2-30x+40

Question

Brice Arroyo

Mathematics

9 December, 05:05

Find the zeros of polynomial functions and solve polynomials equations.

f (x) = 5x^2-30x+40

+4

Answers (2)

Know the Answer?

Kaylynn Marquez · Answer 1

First factor out the 5.

5 (x^2-6x+8)

Then factor the smaller polynomial.

5 (x-4) (x+2)

Then using zero product law, find the roots/zeros/x-intercepts.

x-4=0

x = 4

And

x+2=0

x = - 2

Annabelle Boyer · Answer 2

First factories the polynomials.

After that equate the factors to 0 and find the values of x

In this case it is

x = 4 & x = 2

Then find f (4) & f (2)

Find the zeros of polynomial functions and solve polynomials equations.f (x) = 5x^2-30x+40

Find the zeros of polynomial functions and solve polynomials equations.

f (x) = 5x^2-30x+40