Find the coffiecient of `x^5` in the expansion of `(2-x+ 3x ^2)^6`

Explanation

To find the coefficient of \( x^5 \) in the expansion of \( (2 - x + 3x^2)^6 \), we can use the multinomial expansion formula.

### Step-by-Step Solution:

1. **Identify the General Term**:
The general term in the expansion of \( (a + b + c)^n \) is given by:
\[
T_{r,s,t} = \frac{n!}{r!s!t!} a^r b^s c^t
...