Precal Help? Remainder Theorem?

Question

Use the remainder theorem (as in Example 3) to evaluate f(x) for the given value of x.

f(x) = x² + 9x − 8;      

x = − 7

f(-(sq rt)7=

 

Answer 1

The function

By using remainder theorem

When you divide a polynomial f (x ) by x - c  the remainder r will be f (c ).

is a factor of the polynomial.