Question

Solve the equation by finding all roots. How?
x^3 - 7x^2 + 15x - 9 = 0

Answer 1

\[(x-3)^2(x-1)=0\]

Answer 2

Do you know how you would solve that using the Rational Root Theorem?

Answer 3

guess. check x = 1 first get
\[1-7+15-9=0\] so you know you can factor out
\[(x-1)\]