Question

PLEASE help on math! One questioin

Answer 1

Using the polynomial remainder theorem you divide the polynomial by a linear polynomial given as x-r, where r is the value of f(x)

You are given the value of f(x) as 4.

So now you have:

x^4 -2x^3+5x^2 -20x-4 / x-4

Divide  

= x^3 +2x^2 +13x +32 +124/x-4

The remainder is the number above the x-4, which is 124.

f(4) = 124