21.7 Factor theorem
Factor theorem
Factoring theorem is usually used to factor and find the roots of polynomials. A root or zero is where the polynomial is equal to zero. Therefore, the theorem simply states that when f(k) = 0, then (x – k) is a factor of f(x).
Related concepts:
 Integration of rational functions by partial fractions
Lessons

a)
$\left( {x  2} \right)$

b)
$\left( {x  1} \right)$

c)
$\left( {x + 1} \right)$

d)
$\left( {3x + 5} \right)$
