Question: how to find roots of a rational?
Answer: Rational Roots Test. The Rational Roots Test (also known as Rational Zeros Theorem) allows us to find all possible rational roots of a polynomial. Suppose a is root of the polynomial P ( x ) P\left( x \right) P(x) that means P ( a ) = 0 P\left( a \right) = 0 P(a)=0.