Public debt in example 5 of section 2.3, the federal debt held by the public as a percent of the gross domestic product (gdp) was modeled by the function
y=0.00630t^3-0.289t^2+4.00t+25.3
where t was the time (in years) since 1980. source: budget of the u. s. government.
(a) find the average public debt, as a percent of gdp, from 1990 to 2000.
(b) find the average public debt, as a percent of gdp, from 2000 to 2015.

answer:

bbj

step-by-step explanation:

(x3 + 6x2 + 2x - 6) • (x - 1)

step-by-step explanation:

polynomial long division :

3.2     polynomial long division

dividing :   x4+5x3-4x2-8x+6

                              ("dividend")

by         :     x-1     ("divisor")

dividend     x4   +   5x3   -   4x2   -   8x   +   6

- divisor   * x3     x4   -   x3            

remainder         6x3   -   4x2   -   8x   +   6

- divisor   * 6x2         6x3   -   6x2        

remainder             2x2   -   8x   +   6

- divisor   * 2x1             2x2   -   2x    

remainder               -   6x   +   6

- divisor   * -6x0               -   6x   +   6

remainder                     0

quotient :   x3+6x2+2x-6   remainder:   0