budurrashrash budurrashrash

03-06-2020
Mathematics

contestada

Given f(x)=x^3+2x+k.
and x+1 is a factor of f(x), then what is the value of k?

Respuesta :

PollyP52 PollyP52

07-06-2020

Answer:

k = 3.

Step-by-step explanation:

By the Factor Theorem. if x+a is a factor of f(x) then f(-a) = 0.

Here we use f(-1):

f(-1) = (-1)^3 + 2(-1) + k = 0

-1 - 2 + k = 0

k = 3.

Answer Link

Otras preguntas

Given the balanced equation representing a reaction: H2O + HCl ==> H3O+ + Cl- According to one acid-base theory, the H2O molecule (1) accepts H+ ions (3

Name one of the two longest rivers in the United States.

Where is the Statue of Liberty?

Can someone help me match these up? i know the given is number one I need help with the rest.1.line RS || segment AB, ∠1=∠22.∠B = ∠13.∠A = ∠24.∠A = ∠B5.RA = RBA

A large passenger aircraft accelerates down the runway for a distance of 3300 m before leaving the ground. It then climbs at a steady 6.3 degree angle.After the

Name two national U.S. holidays

Which compound is classified as a hydrocarbon? (1) butanal (3) 2-butanol (2) butyne (4) 2-butanone

Name one state that borders Canada

Under our Constitution, some powers belong to the states. What is one power of the states?

What is A ∩ B? Let set A = {odd numbers between 0 and 100} and set B = {numbers between 50 and 150 that are evenly divisible by 5}.