Exercise
$x^3+7x^2+9x+63$
Step-by-step Solution
Learn how to solve integrals of rational functions problems step by step online. Factor the expression x^3+7x^29x+63. We can factor the polynomial x^3+7x^2+9x+63 using the rational root theorem, which guarantees that for a polynomial of the form a_nx^n+a_{n-1}x^{n-1}+\dots+a_0 there is a rational root of the form \pm\frac{p}{q}, where p belongs to the divisors of the constant term a_0, and q belongs to the divisors of the leading coefficient a_n. List all divisors p of the constant term a_0, which equals 63. Next, list all divisors of the leading coefficient a_n, which equals 1. The possible roots \pm\frac{p}{q} of the polynomial x^3+7x^2+9x+63 will then be. Trying all possible roots, we found that -7 is a root of the polynomial. When we evaluate it in the polynomial, it gives us 0 as a result.
Factor the expression x^3+7x^29x+63
Final answer to the exercise
$\left(x^{2}+9\right)\left(x+7\right)$