Question

Write the function in the form f(x) = (x−k)q(x) + r for the given value of k.
f(x) = x3 + 2x2 − 7x − 9, k = −sqrt(7)

Answer 1

very ugly. you have to use synthetic division answer is
\[ (-2 \sqrt{7}x^2+(2-\sqrt{7}) x-2 \sqrt{7})×(x+\sqrt{7})+5\]

Answer 2

i used this answer and was given an incorrect mark