Answer:
6x² + x - 2
Step-by-step explanation:
To find the quotient of a polynomial expression divided by a monomial, divide each term by the monomial.
becomes

-36x³ / (-6x) = 6x²
(-6x²) / (-6x) = 1x = x
12x / -6x = -2
Place each of these terms together into an polynomial expression once more and the quotient is: 6x² + x - 2