How do you use the Rational Root Theorem to factorise #6x^3+6x^2-72#?
1 Answer
Jun 19, 2017
Explanation:
Expression
Clearly
Applying the rational root theorem to
The divisors of
The divisor of
So, we must check the following rational numbers as potential roots
of the expression:
We observe that +2 is a root since
Since
Computing by polynomial division
Since
Expression