Which of the following represents the zeros of f(x) = x3 − 4x2 − 5x + 20?

the zeros are:

x=-4 and x = and x=

Step-by-step explanation:

To find the zeros of x3 − 4x2 − 5x + 20 we need to factorize the equation, so we have:

actoring:  x3+4x2-5x-20  

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1:  -5x-20  

Group 2:  4x2+x3  

Pull out from each group separately :

Group 1:   (x+4) • (-5)

Group 2:   (x+4) • (x2)

              -------------------

Add up the two groups :

              (x+4)  •  (x2-5)  

Which is the desired factorization

Then, the zeros are:

x=-4 and x = and x=

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation:

step-by-step explanation:

mean or average is 40.6